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:

  A car of mass 800kg attains a speed of 25m/s in 20secs. The power developed in the engine is

  Options:
  A) 1.25 x 10${}^4$W
  B) 2.50x 10${}^4$W
  C) 1.25 x 10${}^6$W
  D) 2.50 x 10${}^6$W
  Show Answer
  The correct answer is A .
• Question 1132:

  Radio waves belongs to the class of ware whose velocity is about

  Options:
  A) 340m/s
  B) 3 × 10${}^6$ m/s
  C) 3 × 10${}^8$ m/s
  D) 3 × 10${}^{-8}$ m/s
  Show Answer
  The correct answer is C .
• Question 1133: The pitch of an acoustic device can be increased by Options:
  A) increasing the frequency
  B) increasing the amplitude
  C) decreasing the loudness
  D) decreasing the intensity
  Show Answer
  The correct answer is A .
• Question 1134:

  

  Two taxis leave Benin and Agbor some 80km apart at 1200hr as shown above. from the distance time graph shown the distance of their meeting point P, from Benin and the time of their meeting are

  Options:
  A) 27km, 1218hr
  B) 29km, 1315hr
  C) 40km, 1418hr
  D) 53km, 1436hr
  E) 60km, 1500hr
  Show Answer
  The correct answer is B .
• Question 1135: In a resonance tube experiment, a tube fixed length is closed at one end and several tuning forks of increasing frequency used to obtain resonance at the open end. If the tuning fork with the lowest frequency which gave resonance had a frequency f₁ and the next tuning fork to give resonance had a frequency f₂, find the ratio $\frac{f^2}{f^2}$. Options:
  A) 8
  B) 3
  C) 2
  D) $\frac{1}{2}$
  E) $\frac{1}{3}$
  Show Answer
  The correct answer is B .
• Question 1136:

  A binary operation $\otimes$ defined on the set of integers is such that m $\otimes$ n = m + n + mn for all integers m and n. Find the inverse of -5 under this operation, if the identity element is 0

  Options:
  A) $\frac{-5}{4}$
  B) $\frac{-5}{6}$
  C) o
  D) 5
  Show Answer
  The correct answer is A .
• Question 1137: 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 .
• Question 1138:

  A ball of mass 0.5kg moving at 10ms${}^{-1}$ 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) 0.2ms${}^{-1}$
  B) 0.5ms${}^{-1}$
  C) 5.0ms${}^{-1}$
  D) 5.5ms${}^{-1}$
  Show Answer
  The correct answer is C .
• Question 1139: A hydrometer is an instrument for measuring the Options:
  A) depth of water in a vessel
  B) relative density of a liquid by the method of flotation
  C) relative dendity of a liquid by finding the apparent loss in weight
  D) relative humidity of the air
  E) atmospheric pressure when the air is humid
  Show Answer
  The correct answer is B .
• Question 1140: When an ebolite rod is rubbed with fur, it has Options:
  A) no charge at all
  B) a negative charge
  C) a positive charge
  D) negative and positive charges
  Show Answer
  The correct answer is B .