Physics Exam Past Questions and Answers | JAMB, WAEC and NECO

Physics is the science that studies the nature and properties of matter and energy. It covers topics like motion, heat, light, sound, electricity, magnetism, and the structure of atoms.

• Question 1691:

  A 1000kg elevator is descending vertically with an acceleration of 1.0ms^-2, if the acceleration due to gravity is 10ms^-2, the tension in the suspending cable is

  Options:
  A) 1.0N
  B) 10.0N
  C) 9000.0N
  D) 11000N
  Show Answer
  The correct answer is C .
• Question 1692: If light with photon energy 2eV is incident suitably on the surface of a metal with work function 3eV, then Options:
  A) no electron will be emitted
  B) the few electrons emitted will have a maximum kinetic energy of 1eV
  C) the few electrons emitted will have a maximum kinetic energy of 3eV
  D) many electrons will be emitted
  Show Answer
  The correct answer is A .
• Question 1693: A zinc has a heat capacity of 40 J/K, what is the mass of the zinc, given that the specific heat of zinc is 380 J/kg k Options:
  A) 0.11kg
  B) 0.12kg
  C) 0.13kg
  D) 0.14kg
  Show Answer
  The correct answer is A .
• Question 1694: A gas at a pressure of 10⁵Nm^-2expands from 0.6m^-3 to 1.2m³ at constant temperature, the work done is Options:
  A) 7.0 x 10⁶J
  B) 6.0 x 10 ⁶J
  C) 6.0 x 10 ⁵J
  D) 6.0 x 10 ⁴J
  Show Answer
  The correct answer is D .
• Question 1695:

  A machine gun with a mass of 5kg fires a 50g bullet at a speed of 100 ms${}^{-1}$. The recoil speed of the machine gun is

  Options:
  A) 0.5 ms${}^{-1}$
  B) 1.5 ms${}^{-1}$
  C) 1 ms${}^{-1}$
  D) 2ms${}^{-}1$
  Show Answer
  The correct answer is C .
• Question 1696:

  

  The diagram above shows a magnet X with its south pole moved along a soft - iron bar PQ in the direction shown. After some time, the poles at P and Q respectively are

  Options:
  A) North - North
  B) North - South
  C) South - North
  D) South - South
  Show Answer
  The correct answer is B .
• Question 1697: Quantities of heat Q can be measured using a container called Options:
  A) Thermometer
  B) Measuring cylinder
  C) Calorimeter
  D) Meter rule
  Show Answer
  The correct answer is C .
• Question 1698:

  Two bodies have masses in the ratio3:1. They experience forces whichimpart to them,acceleration in the ratio 2:9 respectively. Find the ratio of forces the masses experienced

  Options:
  A) 1:4
  B) 2:1
  C) 2:3
  D) 2:5
  Show Answer
  The correct answer is C .
• Question 1699:

  The equation of a wave travelling along the positive x-direction is given by;

  Y = 0.25 x 10^-3 sin (500t - 0.025x).

  Determine the angular frequency of the wave motion.

  Options:
  A) 0.25 x 10^-3rad s^-1
  B) 0.25 x 10^-1rad s^-1
  C) 5.00 x 10²rad s^-1
  D) 2.50 x 10³rad s^-1
  Show Answer
  The correct answer is C .
• Question 1700: A ray of light passing through the centre of curvature of a concave mirror is reflected by the mirror at Options:
  A) 0^o
  B) 45^o
  C) 90^o
  D) 180^o
  Show Answer
  The correct answer is A .