Exam-style questions by topic — Edexcel A-Level Physics
One verified question for each of 13 topics. These are written for this specification and checked by MasteryMind. They are not past-paper questions, and they are not from Pearson Edexcel.
Topic 1: Working as a Physicist
A researcher leaves out three of twelve readings because they weaken a claimed linear relationship, then publishes only the nine that fit. Which practice within the scientific community is most effective at exposing this kind of selective reporting?
Practise Topic 1: Working as a PhysicistTopic 10: Space
A star has a luminosity of 6.0 × 10²⁵ W. A planet orbits at a distance of 3.0 × 10¹¹ m from the star. Calculate the intensity of the star's radiation at the planet.
Practise Topic 10: SpaceTopic 11: Nuclear Radiation
Two nuclei of hydrogen isotopes fuse to form a helium nucleus in the core of a star. Using the binding energy per nucleon curve, which statement explains why energy is released?
Practise Topic 11: Nuclear RadiationTopic 12: Gravitational Fields
A geostationary satellite orbits the Earth with a period of 8.62 × 10⁴ s. Taking the mass of the Earth as 5.97 × 10²⁴ kg and G as 6.67 × 10⁻¹¹ N m² kg⁻², what is the radius of its orbit measured from the centre of the Earth?
Practise Topic 12: Gravitational FieldsTopic 13: Oscillations
A block oscillates with simple harmonic motion described by x = A cos ωt, with amplitude A = 0.080 m and frequency 2.5 Hz, so that x = +A at t = 0. Taking the positive direction as the direction of positive x, what is the velocity of the block at t = 0.060 s? (Use radians for the angle.)
Practise Topic 13: OscillationsTopic 2: Mechanics
An ice-hockey puck slides across ice, and its speed then rises to three times its original value while its mass stays the same. By what factor does its kinetic energy increase?
Practise Topic 2: MechanicsTopic 3: Electric Circuits
A 12 V cell of negligible internal resistance is connected across a 300 Ω resistor in series with a 100 Ω resistor. The output of this potential divider is taken across the 100 Ω resistor only, with nothing else connected to the output. What is the output potential difference?
Practise Topic 3: Electric CircuitsTopic 4: Materials
A ball completely submerged in oil of density 800 kg/m³ displaces 2.5×10⁻⁴ m³ of the oil. Taking g = 9.81 N/kg, what is the upthrust on the ball?
Practise Topic 4: MaterialsTopic 5: Waves and Particle Nature of Light
Light above the threshold frequency of a metal surface causes photoelectrons to be emitted. The frequency of the light is now increased while its intensity is kept constant. What happens to the maximum kinetic energy of the emitted photoelectrons?
Practise Topic 5: Waves and Particle Nature of LightTopic 6: Further Mechanics
An electron of mass 9.11 × 10⁻³¹ kg moves non-relativistically with momentum 1.8 × 10⁻²⁴ kg m s⁻¹. Use Ek = p²/(2m) to calculate its kinetic energy.
Practise Topic 6: Further MechanicsTopic 7: Electric and Magnetic Fields
A 100 μF capacitor charged to 8.0 V is discharged through a 50 kΩ resistor. How long after discharge begins has the current fallen to 40 μA?
Practise Topic 7: Electric and Magnetic FieldsTopic 8: Nuclear and Particle Physics
A probe particle has momentum p. Explain, in terms of the de Broglie relation, why increasing the probe energy allows smaller structures within a nucleon to be resolved.
Practise Topic 8: Nuclear and Particle PhysicsTopic 9: Thermodynamics
A black body sphere of radius 0.15 m radiates a total power of 450 W. Use σ = 5.67 × 10⁻⁸ W m⁻² K⁻⁴ to calculate its surface temperature.
Practise Topic 9: Thermodynamics
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