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 1161: which of the following is NOT correct? i. the pitch of a sound note depends on the frequency of vibrations. ii. the intensity of a sound note is proportional to the amplitude of vibrations. iii. beats are produced by two sources of sound because one wave is travelling faster than the other. iv. when two sources of sound of frequencies 500Hz and 502Hz are sounded together, a beat frequency of 2Hz is observed. v. the first harmonic of a tone have double the frequency of the fundamental note. Options:
  A) i and ii
  B) ii and iii
  C) i and iii
  D) iii and iv
  E) iv and v
  Show Answer
  The correct answer is A .
• Question 1162:

  

  The diagram above shows two wave forms P and Q at a particular instant in time. the two waves will interface

  Options:
  A) destructively to produce a wave of larger amplitude
  B) destructively to produce a wave of smaller amplitude
  C) constructively to produce a wave of larger amplitude
  D) constructively to produce a wave of smaller amplitude
  Show Answer
  The correct answer is C .
• Question 1163: An object is moving with a velocity of 5m^-1. At what height must a similar body be situated to have a potential energy equal in value with kinetic energy of the moving body? Options:
  A) 25.0m
  B) 20.0m
  C) 1.3m
  D) 1.0m
  Show Answer
  The correct answer is C .
• Question 1164: Which of the following electromagnetic waves has the highest frequency? Options:
  A) utra - violet rays
  B) radio waves
  C) x - rays
  D) infrared - rays
  Show Answer
  The correct answer is C .
• Question 1165: A high-resistance voltmeter reads 3.0V when connected across the terminals of a battery on open circuit and 2.6V when the battery supplies a current of 0.2A through a lamp. The resistance of lamp is Options:
  A) 2.00$\mathrm{\Omega }$
  B) 13.00$\mathrm{\Omega }$
  C) 0.52$\mathrm{\Omega }$
  D) 0.13$\mathrm{\Omega }$
  E) 1.50$\mathrm{\Omega }$
  Show Answer
  The correct answer is B .
• Question 1166: Non-luminous object can be seen because they Options:
  A) reflect light
  B) are near
  C) are polished
  D) emit light
  Show Answer
  The correct answer is A .
• Question 1167: When a pure semiconductor is heated, its resistance Options:
  A) increases
  B) decreases
  C) remains the same
  D) increases and then decreases
  Show Answer
  The correct answer is B .
• Question 1168: The mechanism of heat transfer from one point to another through the vibration of the molecules of the medium is Options:
  A) covection
  B) conduction
  C) radiation
  D) diffusion
  Show Answer
  The correct answer is B .
• Question 1169: A progressive wave is represented by $y=10\text{Sin}(1000\pi t-\frac{\pi x}{34})$ . two layers of the wave separated by 153cm have a phase difference of Options:
  A) 270⁰
  B) 45⁰
  C) 90⁰
  D) 180⁰
  E) No Correct Option
  Show Answer
  The correct answer is E .
• Question 1170:

  Which of the following statements about radioactivity is true?

  (i) Alpha particle is positively charged

  (ii)Beta particle is negativelycharged

  (iii) Gamma ray is neutral

  (iv) Beta particle has thesame massas helium atom

  (v) Gamma ray is charged.

  Options:
  A) i, ii, iii, iv only
  B) i, ii, iii only
  C) iv and v only
  D) i, ii and v only
  Show Answer
  The correct answer is B .