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 2291: The iron core of an induction coil is made from bundles of wire so as to Options:
  A) minimize eddy-currents
  B) generate eddy-current
  C) prevent sparking at the contact breaker
  D) get the greatest posible secondary voltage
  Show Answer
  The correct answer is A .
• Question 2292:

  The sensitivity of a thermometer is

  Options:
  A) All of the above
  B) how quickly a temperature change can be detected
  C) the difference between the maximum and the minimum temperature
  D) the smallest temperature change that can be detected or measured
  Show Answer
  The correct answer is D .
• Question 2293:

  Calculate the absolute pressure at the bottom of a lake at a depth of 32.8 m. Assume the density of the water is 1 x 10^3 kgm-3 and the air above is at a pressure of 101.3 kPa.

  [Take g = 9.8 ms-2]

  Options:
  A) 422.7
  B) 220.14
  C) 464.53
  D) 321.74
  Show Answer
  The correct answer is A .
• Question 2294: Which of the following statements are NOT correct? Options:
  A) boiling occurs when the saturated vapour pressure of the liquid involved equals the external pressure
  B) both the boiling point and the saturated vapour pressure of a given liquid depends on the external pressure
  C) the saturated vapour presssure rises with increase in temperature
  D) the saturated vapour pressure is independent of the volume available for the vapour
  E) it is possible to boil water at a lower temperature than 100^oC at high altitude
  Show Answer
  The correct answer is E .
• Question 2295:

  An astronomical telescope is said to be in normal adjustment when the?

  Options:
  A) eye is accommodated
  B) focal length of an object lens is longer than that of eye piece
  C) final image is at the near point of eye
  D) final image is at infinity
  Show Answer
  The correct answer is D .
• Question 2296: Electrical power is transmitted at a high voltage rather than low voltage because the amount of energy loss is reduced due to Options:
  A) heat dissipation
  B) production of eddy currents
  C) excessive current discharge
  D) excessive voltage distance
  Show Answer
  The correct answer is A .
• Question 2297: The battery connection that permits current to flow across a p-n junction is called? Options:
  A) reverse baised
  B) forward baised
  C) amplification.
  D) rectification
  Show Answer
  The correct answer is B .
• Question 2298:

  

  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 2299: The graphite rods surrounding the uranium fuel rods in a nuclear reactor, are used to Options:
  A) absorb the neutrons and hence halt the nuclear process
  B) create the neutrons and hence slow up the nuclear process
  C) slowdown the neutrons and hence slow up the nuclear process
  D) speed up the neutrons and hence speed up the nuclear process
  Show Answer
  The correct answer is C .
• Question 2300: Which type of radiation does not NOT originate within the nucleus? Options:
  A) alpha
  B) beta
  C) gamma
  D) neutron
  E) x-rays
  Show Answer
  The correct answer is E .