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 571: A boy drags a bag of rice along a smooth horizontal floor with a force of 2N applied at the angle of 60^o to the floor. The work done after a distance of 3m is Options:
  A) 3 J
  B) 4 J
  C) 5 J
  D) 6 J
  Show Answer
  The correct answer is A .
• Question 572:

  Metal rods of length 20m each are laid end to end to form a bridge at 25^oC. What gap will be provided between consecutive rails for the bridge to withstand 75^oC?

  [Linear expansivity of the material = 2.0 x 10^-5K^-1]

  Options:
  A) 0.20m
  B) 0.22m
  C) 0.25m
  D) 0.02m
  Show Answer
  The correct answer is D .
• Question 573: A radioactive source emits X–rays of very short wavelength (10 ^-13m ) what is the frequently of these rays? Options:
  A) 2 × 10¹⁸HZ
  B) 3 × 10 ¹⁹HZ
  C) 3 × 10²¹HZ
  D) 3 × 10^-19HZ
  Show Answer
  The correct answer is C .
• Question 574:

  When two objects A and B are supplied with the same quantity of heat, the temperature change in A is obtained to be twice that of B. The mass of P is half that of Q. The ratio of the specific heat capacity of A to B is

  Options:
  A) 1 : 4
  B) 4 : 1
  C) 1 : 1
  D) 2 : 1
  Show Answer
  The correct answer is C .
• Question 575: A block of aluminum is heated electrically by a 25 W heater. if the temperature rises by 10°C in 5 minutes, the heat capacity of the aluminum is? Options:
  A) 850 JK^-1
  B) 750 JK^-1
  C) 650 JK^-1
  D) 500 JK^-1
  Show Answer
  The correct answer is B .
• Question 576: Which of the following with respect to a body performing simple harmonic motion are in phase? Options:
  A) displacement and velocity of the body
  B) displacement and force on the body
  C) velocity and acceleration of the body
  D) force acting on the body and the acceleration
  Show Answer
  The correct answer is C .
• Question 577: To produce an enlarged and erect image with a concave mirror,the object must be positioned Options:
  A) at the principal focus
  B) beyond the centre of curvature
  C) between the principal focus and the centre of the curvature
  D) between the principal focus and the pole
  Show Answer
  The correct answer is D .
• Question 578: Which of the following is NOT a part of a d.c. electric motor? Options:
  A) Field-magnet
  B) Armature
  C) Commutator
  D) Transformer
  Show Answer
  The correct answer is D .
• Question 579: Two particles X and Y starting from rest cover the same distance. The acceleration of X is twice that of Y. the ratio of the time taken by X to that taken by Y is Options:
  A) $\frac{1}{2}$
  B) $\frac{1}{\sqrt{2}}$
  C) $\frac{1}{\sqrt{2}}$
  D) $\sqrt{2}$
  E) 4
  Show Answer
  The correct answer is C .
• Question 580: The areas of the effort and load pistons of a hydraulic press are 0.5m² and 5m² respectively. If a force F₁ of 100N is applied on the effort piston, the force F₂ on the load is Options:
  A) 10N
  B) 100N
  C) 500N
  D) 1000N
  E) 5000N
  Show Answer
  The correct answer is D .