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 1191:

  A ball of mass m moving at velocity u collides with another ball of equal mass at rest. If the two balls move off together after the impact, calculate their common velocity.

  Options:
  A) $\frac{u}{v}$
  B) $\frac{u}{2}$
  C) u
  D) 2u
  E) $\frac{u}{m}$
  Show Answer
  The correct answer is B .
• Question 1192: A series RLC circuit is said to resonate, when Options:
  A) capacitive reactance is zero
  B) conductance is maximum
  C) current is minimum
  D) impedance is minimum
  E) inductive reactance is zero
  Show Answer
  The correct answer is D .
• Question 1193: Vibration in a stretched spring cannot be polarized because they are Options:
  A) stationary waves
  B) transverse waves
  C) longitudinal waves
  D) mechanical waves
  Show Answer
  The correct answer is D .
• Question 1194:

  0.5kg of water at 10ºC is completely converted to ice at 0ºC by extracting (88000) of heat from it. If the specific heat capacity of water is 4200jkg${}^1$ Cº. Calculate the specific latent heat of fusion of ice.

  Options:
  A) 9.0kjkg${}^{-1}$
  B) 84.0kjkg${}^{-1}$
  C) 134.0kjkg${}^{-1}$
  D) 168.0kjkg${}^{-1}$
  Show Answer
  The correct answer is C .
• Question 1195: Calculate the heat energy lost when 10g of boiling water changes to ice at 0°C. [Specific latent heat of ice 336Jg^-1 . Specific heat capacity of water 4.2Jg^-1 K^-1] Options:
  A) 840J
  B) 3360J
  C) 3420J
  D) 4200J
  E) 7560J
  Show Answer
  The correct answer is E .
• Question 1196:

  A travelling wave of amplitude 0.80 m has a frequency of 16 Hz and a wave speed of 20 $ms-1$

  Calculate the wave number of the wave.

  Options:
  A) 3
  B) 4
  C) 5
  D) 2
  Show Answer
  The correct answer is C .
• Question 1197:

  Which of the following statements is/are correct for a freely falling body?

  I. the total is entirely kinetic

  II. the ratio of potential energy to kinetic energy is constant

  III. the sum of potential and kinetic energy is constant

  Options:
  A) I only
  B) II only
  C) III only
  D) I and III only
  Show Answer
  The correct answer is C .
• Question 1198: Which of the following statements is TRUE of photoelectric effect? Options:
  A) it cannot occur in liquids
  B) the energy of the emitted electrons is independent of the work function of the surface
  C) the energy of the emitted electron depends on the wavelength of the incident light
  D) the greater the intensity of the incuident light, the greater the incident of the emitted electron
  Show Answer
  The correct answer is A .
• Question 1199:

  The diagram shows four positions of the bob of a simple pendulum. At which of these positions does the bob have maximum kinetic energy and minimum potential energy

  Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is B .
• Question 1200: 200g of water at 90^oC is mixed with 100g of water at 30^oC. What is the final temperature? Options:
  A) 50^oC
  B) 60^oC
  C) 70^oC
  D) 80^oC
  Show Answer
  The correct answer is C .