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 1171: On which of the following does the operation of a moving coil ammeter depend? i. Electromagnetic induction ii. Force on a carrying-current conductor iii. Magnetic effect of an electric current Options:
  A) i only
  B) ii only
  C) iii only
  D) ii and iii only
  E) i,ii and iii
  Show Answer
  The correct answer is B .
• Question 1172:

  The process whereby a liquid turns spontaneously into vapour is called

  Options:
  A) regelation
  B) evaporation
  C) boiling
  D) sublimation
  Show Answer
  The correct answer is B .
• Question 1173: Ripples on water and light waves are similar because both Options:
  A) have the same frequency
  B) can be refracted and diffracted
  C) are longitudinal waves
  D) have the same velocity
  Show Answer
  The correct answer is C .
• Question 1174: The general gas law can be written as Options:
  A) PV ÷ T = a constant
  B) PV = a constant
  C) v/t = a constant
  D) p/T = a constant
  Show Answer
  The correct answer is A .
• Question 1175: Two rays of light from a point below the surface of water are equally inclined to each other at 60^o in water. What is the angle between the rays when they emerge into air? (Take the refractive index of water to be $\frac{4}{3}$) Options:
  A) 41.8^o
  B) 44.1^o
  C) 60.0^o
  D) 83.6^o
  E) 120.0^o
  Show Answer
  The correct answer is D .
• Question 1176: The force of repulsion between two point positive charges 5$\mu$C and 8$\mu$C separated at a distance of 0.02 map art is. [$\frac{1}{4\pi {\epsilon }_o}$ = 9 x 10⁹Nm²C^-2] Options:
  A) 1.8 x 10^-10N
  B) 9.0 x 10^-8N
  C) 9.0 x 10²N
  D) 4.5 x 10³N
  Show Answer
  The correct answer is C .
• Question 1177: A hydrometer is an instrument for measuring the Options:
  A) depth of water in a vessel
  B) relative density of a liquid by the method of flotation
  C) relative dendity of a liquid by finding the apparent loss in weight
  D) relative humidity of the air
  E) atmospheric pressure when the air is humid
  Show Answer
  The correct answer is B .
• Question 1178:

  A resistance R is connected across the terminal of an electric cell of internal resistance 2Ω and the voltage was reduced to 3/5 of its nominal value.

  The value of R is

  Options:
  A) 3 Ω
  B) 2 Ω
  C) 1 Ω
  D) 6 Ω
  Show Answer
  The correct answer is A .
• Question 1179: The unit of quantity of electricity is called Options:
  A) the ampere
  B) the volts
  C) the coulomb
  D) the ammeter
  E) electromotive force
  Show Answer
  The correct answer is C .
• Question 1180: The threshold of frequency for photoelectric effect depends on the Options:
  A) intensity of incident light
  B) frquency of incident light
  C) material of the photocathode
  D) potential difference between the cathode and the anode
  Show Answer
  The correct answer is C .