2020 A/L Physics Past Paper 1 (English Medium)

G.C.E. (A/L) Physics 2020 — Paper I

2020 A/L Physics past paper 1 in English medium: 50 MCQ questions, each with the answer and a full explanation.

  1. Q01: The dimension of Planck's constant
  2. Q02: Micrometer screw gauge: the diameter of a sphere with a zero error
  3. Q03: The intensity level of the threshold of hearing
  4. Q04: Average velocity from a velocity–time graph
  5. Q05: Moment of inertia of a thin rod about a parallel axis
  6. Q06: The quark content of a proton and a neutron
  7. Q07: Earthquake waves — which is not correct?
  8. Q08: An oblique ray through a converging lens onto a screen
  9. Q09: Snapshot of a transverse wave — particles with equal velocity
  10. Q10: Weight of an instrument on the surface of another planet
  11. Q11: A standing wave — the distance from a node to the next antinode
  12. Q12: Eight long wires — magnetic flux density at the centre C
  13. Q13: Two rooms joined by a door — final relative humidity
  14. Q14: Three-branch circuit — the p.d. across capacitor C
  15. Q15: Semiconductors, a rectifier, transistors, a comparator — which statement is NOT correct?
  16. Q16: Simple harmonic motion: angular frequency from the largest velocity and acceleration
  17. Q17: A potentiometer — the balance point shifts after R is changed
  18. Q18: AND, OR gates — the shape of the output X
  19. Q19: Centre of gravity of four rings joined at X
  20. Q20: Water and coconut oil in a U-tube — which statements are true?
  21. Q21: A warmed open pipe — beats
  22. Q22: Blocks joined over a pulley — force for constant speed
  23. Q23: A projectile exploding at the top — the path of the other half
  24. Q24: Ideal gas — internal energy change in process ac
  25. Q25: Electric potential energy of three charges at the corners of an equilateral triangle
  26. Q26: Copper block on a spring balance — upthrust and reading at three positions
  27. Q27: A lagged rod that narrows — the steady-state temperature distribution
  28. Q28: A free charged sphere on a smooth table — its path
  29. Q29: A steadily increasing magnetic field — induced e.m.f. against the rate of change
  30. Q30: Force–time graph: when is the body's velocity zero?
  31. Q31: Potential of a big drop formed by a million merging mercury droplets
  32. Q32: A prism — statements about the angle of minimum deviation D
  33. Q33: A two-way switch — the internal resistance that gives equal power in both resistors
  34. Q34: Newton's law of cooling — time to cool from 44 °C to 36 °C
  35. Q35: The largest mass of ice that can melt in 35 °C water
  36. Q36: A compound microscope — the magnification of the eyepiece
  37. Q37: The new radius of a particle that loses energy through an aluminium foil
  38. Q38: A potential divider and a sliding key — ammeter and voltmeter readings
  39. Q39: A sagging metal wire — Young's modulus
  40. Q40: Period of revolution of a positive charge circling an endless charged wire
  41. Q41: A tank feeding a horizontal pipe — the water level at B
  42. Q42: Velocity against time for a jump with a parachute
  43. Q43: Half-life — number, age, ionisation
  44. Q44: An electron's path through two regions — the directions of the magnetic fields
  45. Q45: Capillary rise in a lift — downward acceleration and free fall
  46. Q46: Two joined tubes — real cubical expansivity of a liquid
  47. Q47: An endless ladder network — the equivalent resistance between A and B
  48. Q48: Three stars at the corners of an equilateral triangle — period of revolution
  49. Q49: Two blocks with springs — greatest energy stored in the springs
  50. Q50: Five parallel plates — the equivalent capacitance between X and Y

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