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 1131: The density 400cm³ of palm oil was 0.9gcm^-3 before frying. If the density of the oil was 0.6gm^-3 after frying,assuming no loss of oil due to spilling, its new volume was Options:
  A) 360cm³
  B) 600cm³
  C) 240cm³
  D) 800cm³
  E) 450cm³
  Show Answer
  The correct answer is B .
• Question 1132:

  Which of the following is/areNOT affected by a magnetic field? I. Alpha particle

  II. Cathode rays

  III. Neutrons

  Options:
  A) I only
  B) II only
  C) III only
  D) I and II only
  E) I,II & III
  Show Answer
  The correct answer is C .
• Question 1133: The photocell works on the principle of the Options:
  A) voltaic cell
  B) emision of electrons by incident radiation
  C) emision of protons by incident electrons
  D) photographic plate
  Show Answer
  The correct answer is B .
• Question 1134: Which of the following obeys ohms laws? Options:
  A) electroytes
  B) metals
  C) diode
  D) glass
  Show Answer
  The correct answer is B .
• Question 1135:

  

  A body of mass 10kg on a smooth inclined plane is connected to a smooth pulley to a mass of 15kg as shown above, the acceleration of the system is

  Options:
  A) 1/4g
  B) 8/25g
  C) 1/2g
  D) 2/5g
  E) 3/4g
  Show Answer
  The correct answer is D .
• Question 1136: What is the relative permitivity of a capacitor if its capacitance with a medium as dielectric is 16 farads and its capacitance with vacuum as dielectric is 2 farads? Options:
  A) o
  B) $\frac{1}{2}$
  C) 2
  D) 8
  E) 32
  Show Answer
  The correct answer is D .
• Question 1137:

  A 40KW electric cable was uses to transmit electricity through a resistor of resistance 2.00Ω at 800V. The power loss as internal energy is

  Options:
  A) 4.0 x 10²W
  B) 5.0 x 10²W
  C) 4.0 x 10³W
  D) 5.0 x 10³W
  Show Answer
  The correct answer is D .
• Question 1138: Which of the following statements is correct about light and sound waves? Both Options:
  A) are longitudinal waves
  B) are transverse waves
  C) have the same velocity in air
  D) need a medium for propagation
  E) transmit energy
  Show Answer
  The correct answer is E .
• Question 1139: Which of the following is used in a nuclear reactor to slow down fast moving neutrons? Options:
  A) graphite rods
  B) carbon dioxide gas
  C) liquid sodium metal
  D) concrete shield
  E) boron rods
  Show Answer
  The correct answer is A .
• Question 1140: The time rate of loss of heat by a body is proportional to the Options:
  A) difference in temprature between the body and its surroundings
  B) temperature of its surroundings
  C) ratio of the temperature of the body to that of its surroundings
  D) temperature of the body
  Show Answer
  The correct answer is A .