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 1071: What is the length of liquid column in a barometer tube that would support an atmospheric pressure of 102000Nm^-2 if the density of the liquid is 2600kgm^-3? [g = 10ms^-2] Options:
  A) 0.75m
  B) 0.76m
  C) 3.92m
  D) 39.23m
  Show Answer
  The correct answer is C .
• Question 1072: An electric current of 3Aflowing through an electric heating elements of resistance 20 embedded in 1,000g of an oil raises the temperature of the oil by 10^oC in 10 seconds then the specific heat capacity of the oil is Options:
  A) 1.8Jg^-1oC
  B) 0.6Jg^-1oC
  C) 0.18Jg^-1oC
  D) 18Jg^-1oC
  E) 0.06Jg^-1oC
  Show Answer
  The correct answer is C .
• Question 1073: The angle between the direction of the earth's magnetic field and the horizontal is called the Options:
  A) angle of deviation
  B) magnetic declination
  C) magnetic meridian
  D) angle of dip
  Show Answer
  The correct answer is D .
• Question 1074:

  

  The figure above shows a block of mass m sliding down a rough inclined plane QP at angle $\theta$ . The forces acting on the block along QP are

  Options:
  A) mg sinθ and the normal reaction
  B) mg sinθ and the force of friction
  C) mg sinθ and the normal reaction
  D) mg cosθ and the normal reaction
  Show Answer
  The correct answer is B .
• Question 1075: The S.I unit of moment of a force is Options:
  A) kgm
  B) µm
  C) Jm
  D) µm${}^{-1}$
  Show Answer
  The correct answer is B .
• Question 1076: Which of the following can be used to reduce local action in a Laclanche cell? Options:
  A) A carbon rod as the positive pole
  B) Pure zinc as the negative pole
  C) Potassium permanganate solution in contact with the positive pole
  D) common salt solution
  Show Answer
  The correct answer is C .
• Question 1077: A 5kg block is released from rest on a smooth plane inclined at an angle of 30^o to the horizontal. What is the acceleration down the plane? [g = 10ms^-2] Options:
  A) 5.0 ms^-2
  B) 5.8 ms^-2
  C) 8.7 ms^-2
  D) 25.0 ms^-2
  Show Answer
  The correct answer is A .
• Question 1078:

  

  The current I in the fig above is

  Options:
  A) 4.00A
  B) 1.30A
  C) 0.80A
  D) 0.75A
  Show Answer
  The correct answer is A .
• Question 1079:

  The refractive index of a liquid is 1.5. If the velocity of light in vacuum is 3.0 x 10${}^{8}m{s}^{-1}$, the velocity of light in the liquid is

  Options:
  A) 1.5 x 10${}^{8}m{s}^{-1}$
  B) 2.0 x 10${}^{8}m{s}^{-1}$
  C) 3.0 x 10${}^{8}m{s}^{-1}$
  D) 4.5 x 10${}^{8}m{s}^{-1}$
  Show Answer
  The correct answer is B .
• Question 1080: A catapult used to hold a stone of mass 500g is extended by 20cm with an applied force F. If the stone leaves with a velocity of 40m/s, the value of F is Options:
  A) 4.0 x 10²N
  B) 2.0 x 10³N
  C) 4.0 x 10³N
  D) 4.0 x 10⁴N
  Show Answer
  The correct answer is B .