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 2041: A bullet fired at a wooden block of thickness 0.15m manages to penetrate the block. If the mass of the bullet is 0.025kg and the average resisting force of the wood is 7.5 x 10³N, calculate the speed of the bullet just before it hits the wooden block. Options:
  A) 450ms^-1
  B) 400ms^-1
  C) 300ms^-1
  D) 250ms^-1
  Show Answer
  The correct answer is C .
• Question 2042: An object placed on the principle axis of a convex lens of focal length 10m produces a real image of double magnification. The image distance from the lens is Options:
  A) 30cm
  B) 25cm
  C) 20cm
  D) 15cm
  E) 10cm
  Show Answer
  The correct answer is A .
• Question 2043: A transformer has 300 turns of wire in the primary coil and 30 turns in the secondary coil.If the input voltage is 100 volts, the output voltage is Options:
  A) 5 volts
  B) 10 volts
  C) 15 volts
  D) 20 volts
  E) 25 volts
  Show Answer
  The correct answer is B .
• Question 2044: If the focal length of a camera lens is 20cm, the distance from the film at which the lens must be set to produce a sharp image of an object 100cm away is Options:
  A) 17cm
  B) 20cm
  C) 25cm
  D) 100cm
  Show Answer
  The correct answer is C .
• Question 2045:

  In a series R-L-C circuit at resonance, the voltages across the resistor and the inductor are 30V and 40V respectively. What is the voltage across the capacitor?

  Options:
  A) 30V
  B) 70V
  C) 50V
  D) 40V
  Show Answer
  The correct answer is D .
• Question 2046:

  A straight wire 15cm long, carrying a current of 6.0A is in a uniform field of 0.40T. What is the force on the wire when it is at right angle to the field

  Options:
  A) 0.46N
  B) 0.35N
  C) 0.36N
  D) 0,24N
  Show Answer
  The correct answer is C .
• Question 2047: a lead bullet of mass 0.05kg is fired with a velocity of 200ms^-1 into a lead block of mass 0.95kg. Given that the lead block can move freely, the final kinetic energy after impact is Options:
  A) 50 J
  B) 100 J
  C) 150 J
  D) 200 J
  Show Answer
  The correct answer is A .
• Question 2048:

  

  The figure above shows displacement-time graphs for three different motions. which of the following statements is correct

  Options:
  A) graph 2 corresponds to the highest velocity
  B) graph 1 corresponds to zero gravity
  C) graph 3 corresponds to a particle moving in the negative x direction
  D) graph 2 corresponds to a particle moving in the positive x direction
  Show Answer
  The correct answer is D .
• Question 2049:

  A ball of mass 0.5kg moving at 10ms${}^{-1}$ collides with another ball of equal mass at rest. If the two balls move off together after the impact, calculate their common velocity.

  Options:
  A) 0.2ms${}^{-1}$
  B) 0.5ms${}^{-1}$
  C) 5.0ms${}^{-1}$
  D) 5.5ms${}^{-1}$
  Show Answer
  The correct answer is C .
• Question 2050: A car of mass 800kg attains a speed of 25m/s in 20 secs. The power developed in the engine is Options:
  A) 1 . 25 x 10⁴ W
  B) 2 . 50 x 10⁴ W
  C) 1 . 25 x 10⁶W
  D) 2 . 50 x 10⁶ W
  Show Answer
  The correct answer is B .