This resource is a complete lesson that covers Young’s Double-Slit Experiment for the OCR A Level Physics A course. However, it is useful for other exam boards too. This lesson teaches the following content: -techniques and procedures used for superposition experiments involving light -Young’s double-slit experiment using visible light -λ = ax / D for all waves where a << D -techniques and procedures used to determine the wavelength of light using a double-slit This lesson includes: -A full presentation including 2 example questions with worked solutions. -A worksheet with model answers, perfect to set as homework. -Clear visual aids and diagrams to simplify complex concepts. -Editable PowerPoint and Word document for easy customisation. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

A Level Physics worksheet containing questions about the lesson: Refractive Index & Total Internal Reflection Model Answers Included This worksheet covers the following content: -refraction of light -refractive index; n = c/v -n1 sin θ1 = n2 sin θ2 at a boundary, where θ is the angle to the normal -techniques and procedures used to investigate refraction and total internal reflection of light using ray boxes, including transparent rectangular and semi-circular blocks -critical angle; sin C = 1/n -total internal reflection for light. This is tailored for the OCR A specification, however, the versatile nature of this resource makes it suitable for other exam boards too. This resource is designed to help students apply their knowledge to questions. This active revision technique ensures that the worksheet will be very useful for students, and will act as a vital revision tool. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

A Level Physics worksheet containing questions about the lesson: Resistance & Resistivity Model Answers Included This worksheet covers the following content: -resistance; R = V / I ; the unit ohm -resistivity of a material; the equation R = pL / A -the variation of resistivity of metals and semiconductors with temperature -techniques and procedures used to determine the resistivity of a metal. This is tailored for the OCR A specification, however, the versatile nature of this resource makes it suitable for other exam boards too. This resource is designed to help students apply their knowledge to questions. This active revision technique ensures that the worksheet will be very useful for students, and will act as a vital revision tool. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

A Level Physics worksheet containing questions about the lesson: Impulse & Vehicle Safety Model Answers Included This worksheet covers the following content: -impulse of a force; impulse = change in momentum -vehicle safety design -risks of vehicle safety features This is tailored for the OCR A specification, however, the versatile nature of this resource makes it suitable for other exam boards too. This resource is designed to help students apply their knowledge to questions. This active revision technique ensures that the worksheet will be very useful for students, and will act as a vital revision tool. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

This resource is a complete lesson that covers Superposition & Interference for the OCR A Level Physics A course. However, it is useful for other exam boards too. This lesson teaches the following content: -the principle of superposition of waves -graphical methods to illustrate the principle of superposition -interference, phase difference and coherence -describing constructive and destructive interference in terms of phase difference This lesson includes: -A full presentation including 2 example questions with worked solutions. -A worksheet with model answers, perfect to set as homework. -Clear visual aids and diagrams to simplify complex concepts. -Editable PowerPoint and Word document for easy customisation. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

This resource is a complete lesson that covers Diffraction for the OCR A Level Physics A course. However, it is useful for other exam boards too. This lesson teaches the following content: -diffraction for all waves, including light -techniques and procedures to demonstrate diffraction using a ripple tank This lesson includes: -A full presentation including an example question with a worked solution. -A worksheet with model answers, perfect to set as homework. -Clear visual aids and diagrams to simplify complex concepts. -Editable PowerPoint and Word document for easy customisation. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

This resource is a complete lesson that covers Two-Source Interference for the OCR A Level Physics A course. However, it is useful for other exam boards too. This lesson teaches the following content: -path difference -constructive and destructive interference in terms of path difference -two-source interference with sound and microwaves -techniques and procedures used for superposition experiments using sound, light and microwaves This lesson includes: -A full presentation including 2 example questions with worked solutions. -A worksheet with model answers, perfect to set as homework. -Clear visual aids and diagrams to simplify complex concepts. -Editable PowerPoint and Word document for easy customisation. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

22 A Level Physics worksheets containing questions for the topic: Electrons, Waves, & Photons (Module 4) Each worksheet includes a set of model answers In total, there are approximately 128 pages This is tailored for the OCR A specification, however, the versatile nature of this resource makes it suitable for other exam boards too. Worksheets included: -Circuits, Current & Potential Difference -Resistance & Resistivity -Conductors & I-V Characteristics -Power & Electrical Energy -EMF & Internal Resistance -Kirchhoff’s Laws -The Potential Divider -Progressive Waves -Frequency, Speed & Intensity -Electromagnetic Waves & Polarisation -Reflection & Refraction -Refractive Index & Total Internal Reflection -Diffraction -Superposition & Interference -Two-Source Interference -Young’s Double-Slit Experiment -Diffraction Gratings -Stationary Waves -The Photon Model -The Planck Constant -The Photoelectric Effect -Wave-Particle Duality Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson

This resource is a complete lesson that covers States of Matter & Temperature for the OCR A Level Physics A course. However, it is useful for other exam boards too. This lesson teaches the following content: -thermal equilibrium -absolute scale of temperature (i.e. the thermodynamic scale) that does not depend on property of any particular substance -temperature measurements both in degrees Celsius (°C) and in kelvin (K) -T(K) ≈ θ(°C)+273 -solids, liquids and gases in terms of the spacing, ordering and motion of atoms or molecules -simple kinetic model for solids, liquids and gases -Brownian motion in terms of the kinetic model of matter and a simple demonstration using smoke particles suspended in air -internal energy as the sum of the random distribution of kinetic and potential energies associated with the molecules of a system -absolute zero (0 K) as the lowest limit for temperature; the temperature at which a substance has minimum internal energy -increase in the internal energy of a body as its temperature rises -changes in the internal energy of a substance during change of phase; constant temperature during change of phase. This lesson includes: -A full presentation including 4 example questions with worked solutions. -A worksheet with model answers, perfect to set as homework. -Clear visual aids and diagrams to simplify complex concepts. -Editable PowerPoint and Word document for easy customisation. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

This resource is a complete lesson that covers The Internal Energy of an Ideal Gas for the OCR A Level Physics A course. However, it is useful for other exam boards too. This lesson teaches the following content: -general characteristics of the Maxwell-Boltzmann distribution. -internal energy of an ideal gas. -the derivation of the equation 1/2 mc² = 3/2 kT This lesson includes: -A full presentation including 2 example questions with worked solutions. -A worksheet with model answers, perfect to set as homework. -Clear visual aids and diagrams to simplify complex concepts. -Editable PowerPoint and Word document for easy customisation. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

This resource is a complete lesson that covers Centripetal Force & Acceleration for the OCR A Level Physics A course. However, it is useful for other exam boards too. This lesson teaches the following content: -a constant net force perpendicular to the velocity of an object causes it to travel in a circular path -centripetal acceleration; a = v²/r ; a = ω²r -centripetal force; F = mv²/r ; F = mω²r -techniques and procedures used to investigate circular motion using a whirling bung. This lesson includes: -A full presentation including 2 example questions with worked solutions. -A worksheet with model answers, perfect to set as homework. -Clear visual aids and diagrams to simplify complex concepts. -Editable PowerPoint and Word document for easy customisation. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

This resource is a complete lesson that covers Simple Harmonic Motion for the OCR A Level Physics A course. However, it is useful for other exam boards too. This lesson teaches the following content: -displacement, amplitude, period, frequency, angular frequency and phase difference -simple harmonic motion; defining equation a =-ω²x -techniques and procedures used to determine the period/frequency of simple harmonic oscillations -solutions to the equation a = -ω²x e.g. x = Acosωt or x = Asinωt -velocity v = ± ω √ (A² - x²) hence vmax = ωA -the period of a simple harmonic oscillator is independent of its amplitude (isochronous oscillator) -graphical methods to investigate simple harmonic motion (mass of spring system). -interchange between kinetic and potential energy during simple harmonic motion -energy-displacement graphs for a simple harmonic oscillator This lesson includes: -A full presentation including 2 example questions with worked solutions. -A worksheet with model answers, perfect to set as homework. -Clear visual aids and diagrams to simplify complex concepts. -Editable PowerPoint and Word document for easy customisation. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

This resource is a complete lesson that covers Gravitational Fields for the OCR A Level Physics A course. However, it is useful for other exam boards too. This lesson teaches the following content: -gravitational fields are due to objects having mass -modeling the mass of a spherical object as a point mass at its centre -gravitational field lines to map gravitational fields (uniform and radial) -the concept of gravitational fields as being one of a number of forms of field giving rise to a force -Newton’s law of gravitation; F = -(GMm)/r² for the force between two point masses (inverse square law) This lesson includes: -A full presentation including 2 example questions with worked solutions. -A worksheet with model answers, perfect to set as homework. -Clear visual aids and diagrams to simplify complex concepts. -Editable PowerPoint and Word document for easy customisation. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

This resource is a complete lesson that covers Gravitational Potential & Energy for the OCR A Level Physics A course. However, it is useful for other exam boards too. This lesson teaches the following content: -gravitational potential at a point as the work done in bringing unit mass from infinity to the point. -gravitational potential is zero at infinity -gravitational potential Vg =-GM/r at a distance r from a point mass M -changes in gravitational potential -force–distance graph for a point or spherical mass; work done is area under graph -gravitational potential energy E = mVg = - GMm / r at a distance r from a point mass M -escape velocity. This lesson includes: -A full presentation including 3 example questions with worked solutions. -A worksheet with model answers, perfect to set as homework. -Clear visual aids and diagrams to simplify complex concepts. -Editable PowerPoint and Word document for easy customisation. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

This resource is a complete lesson that covers Planetary Motion (Motion of Masses in Gravitational Fields) for the OCR A Level Physics A course. However, it is useful for other exam boards too. This lesson teaches the following content: -Kepler’s three laws of planetary motion -the centripetal force on a planet is provided by the gravitational force between it and the Sun -the equation T² = (4π²/GM)r³ (T² ∝ r ³) including derivation from first principles -geostationary orbit; uses of geostationary satellites This lesson includes: -A full presentation including 2 example questions with worked solutions. -A worksheet with model answers, perfect to set as homework. -Clear visual aids and diagrams to simplify complex concepts. -Editable PowerPoint and Word document for easy customisation. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

This resource is a complete lesson that covers Astronomical Distances for the OCR A Level Physics A course. However, it is useful for other exam boards too. This lesson teaches the following content: -distances measured in light-years (ly) and parsecs (pc) -stellar parallax and how it can be used to find distances in parsecs (pc) -the equation p = 1/d, where p is the parallax in seconds of arc and d is the distance in parsecs This lesson includes: -A full presentation including 2 example questions with worked solutions. -A worksheet with model answers, perfect to set as homework. -Clear visual aids and diagrams to simplify complex concepts. -Editable PowerPoint and Word document for easy customisation. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

This resource is a complete lesson that covers Stellar Evolution (Life Cycle of Stars) for the OCR A Level Physics A course. However, it is useful for other exam boards too. This lesson teaches the following content: -formation of a star from interstellar dust and gas in terms of gravitational collapse, fusion of hydrogen into helium, radiation and gas pressure -evolution of a low-mass star like our Sun into a red giant and white dwarf; planetary nebula -characteristics of a white dwarf; electron degeneracy pressure; Chandrasekhar limit -evolution of a massive star into a red super giant and then either a neutron star or black hole via a supernova -characteristics of a neutron star and a black hole This lesson includes: -A full presentation with visual aids. -A worksheet with model answers, perfect to set as homework. -Editable PowerPoint and Word document for easy customisation. Click on the links below to check out our FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson We really appreciate feedback on our resources so if you kindly leave a review down below, you will be able to claim any resource (up to the value of this resource) from our shop for FREE. Just email resourcify321@gmail.com with your username and your chosen resource. Your chosen resource will be sent to you within 24 hours.

This resource includes 5 free complete lessons that cover the topic Forces in Action for the OCR A Level Physics A course. Although this resource is designed for the OCR A specification, the content covered is suitable for other exam boards too. Lessons Included: -Mass, Weight & Force Basics -Net Forces & Equilibrium -Moments & Torques -Drag & Terminal Velocity -Density, Pressure & Upthrust

A Level Physics worksheet containing questions about the lesson: Net Forces & Equilibrium Model Answers Included This is tailored for the OCR A specification, however, the versatile nature of this resource makes it suitable for other exam boards too. This resource is designed to help students apply their knowledge to questions. This active revision technique ensures that the worksheet will be very useful for students, and will act as a vital revision tool. Click on the links below to check out our other FREE A Level Physics resources: Mass, Weight & Force Basics Lesson Net Forces & Equilibrium Lesson Moments & Torques Lesson Drag & Terminal Velocity Lesson Density, Pressure & Upthrust Lesson