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 41:

  Which of the statements about prism binoculars is/are correct? They I. are a pair of two telescopes mounted side by side

  II. reduce the optical path of the light ray from the objective to the eye piece

  III, present inverted and diminished image to the viewer

  IV. present erect and magnified image to the viewer.

  Options:
  A) I only
  B) II only
  C) I and II only
  D) I, II and IV only
  E) II, III and IV only
  Show Answer
  The correct answer is D .
• Question 42:

  Heat is supplied uniformly at the rate of 100W to 1.0 x 10${}^{-2}$kg of a liquid for 20 seconds. If the temperature of the liquid rises by 5${}^o$C, then the specific heat capacity of the liquid is

  Options:
  A) 2.0 x 10${}^2$Jkg${}^{-}1$K${}^{-}1$
  B) 2.0 x 10${}^2$Jkg${}^{-}1$
  C) 4.0 x 10${}^4$Jkg${}^{-}1$K${}^{-}1$
  D) 4.0 x 10${}^4$Jkg${}^{-}1$
  Show Answer
  The correct answer is C .
• Question 43:

  

  What is the resultant capacity of the circuit

  Options:
  A) 1.5µF
  B) 18.0µF
  C) 6.0µF
  D) 6.8µF
  E) 8.83µF
  Show Answer
  The correct answer is A .
• Question 44: Light of velocity 3 x 10⁸ms^-1 is incident on a material of reflective of index n. If the velocity of light is reduced to 2.4 x 10⁸ms^-1 in the material, what is n? Options:
  A) 2.33
  B) 2.25
  C) 1.33
  D) 1.25
  Show Answer
  The correct answer is D .
• Question 45:

  At what frequency would a capacitor of 2.5μF

  Used in radio circuit have a resistance of 250Ω

  Options:
  A) π/800 Hz
  B) 800/π Hz
  C) 200π Hz
  D) 2000π Hz
  Show Answer
  The correct answer is B .
• Question 46:

  Arrange the following in the order of their increasing frequency.I. Visible light

  II. Gamma rays

  III. Radio waves

  IV. Infra-red radiation

  V. Ultra-violet radiation

  Options:
  A) I, II, III, IV, V
  B) II, III, IV, V, I
  C) III, IV, V, I, II
  D) IV, III, I. V, II
  E) III, IV, I,V, II
  Show Answer
  The correct answer is E .
• Question 47: If the fundamental frequency of a closed pipe organ on a day when the speed of sound is 340ms^-1 is 170Hz, then the length of the pipe is Options:
  A) 50cm
  B) 70cm
  C) 100cm
  D) 150cm
  E) 200cm
  Show Answer
  The correct answer is A .
• Question 48: Calculate the escape velocity of a satellite launched from the earth's surface if the radius of the earth is 6.4x10⁶m Options:
  A) 25.3kms^-1
  B) 4.2kms^-1
  C) 4.0kms^-1
  D) 11.3kms^-1
  Show Answer
  The correct answer is D .
• Question 49: A train has an initial velocity of 44ms^-1 and an acceleration of -4ms^-1. Its velocity after 10 seconds is Options:
  A) 2ms^-1
  B) 4ms^-1
  C) 8ms^-1
  D) 12ms^-1
  E) 16ms^-1
  Show Answer
  The correct answer is B .
• Question 50: A heater marked 50W will evaporate 0.005kg of boiling water in 50 seconds. The specific latent heat of vaporization of water in J/kg is Options:
  A) 5.0 x 10⁶
  B) 1.0 x 10⁶
  C) 2.5 x 10⁶
  D) 2.5 x 10⁵
  E) 5.0 x 10⁵
  Show Answer
  The correct answer is E .