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 91:

  I. They should be identical

  II. They should originate from the same source.

  III. They should be coherent.

  IV. They should be monochromatic.

  From the statements above, the conditions for two waves to interfere are?

  Options:
  A) I,II and III only
  B) I, III and IV only
  C) II, III and IV only
  D) I, II, III and IV
  Show Answer
  The correct answer is B .
• Question 92: Two resistors R₁ and R₂ are connected in parallel, R₂ being greater than R₁. The combined resistance is Options:
  A) less than R₁
  B) greater than R₂
  C) the sum of R₁ and R₂
  D) the difference of R₂ and R₁
  E) greater thanR₁ but less than R₂
  Show Answer
  The correct answer is C .
• Question 93: An electric bell operated within an evacuated bell jar enables us to infer correctly that Options:
  A) light waves require a medium for transmission
  B) sound waves do not require a medium for transmission
  C) light waves do not require a medium for transmission but sound waves do
  D) light waves travel much faster than sound waves
  E) light waves and sound waves travel at the same speed
  Show Answer
  The correct answer is C .
• Question 94: 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 95: The following are the scores of ten students in a test of 20 marks: 15, 16, 17, 13, 16, 8, 5, 16, 19, 17. What is the modal? Options:
  A) 13
  B) 15
  C) 16
  D) 19
  Show Answer
  The correct answer is C .
• Question 96: Which of the following is used for shielding radioactive fallout? Options:
  A) Aluminum
  B) Lead
  C) Iron
  D) Plastic
  E) Wood
  Show Answer
  The correct answer is B .
• Question 97: A car of mass 1500 kg goes round a circular curve of radius 50m at a speed of 40 ms^-1. The magnitude of the centripetal force on the car is ? Options:
  A) 4.8 x 10⁴ N
  B) 4.8 x 10³ N
  C) 1.2 x 10³ N
  D) 1.2 x 10² N
  Show Answer
  The correct answer is A .
• Question 98:

  How much work is done against the gravitational force on a 3.0 kg object when it is carried from the ground floor to the roof of a building, a vertical climb of 240 m?

  Options:
  A) 7.2 kJ
  B) 4.6 kJ
  C) 6.8 kJ
  D) 8.4 kJ
  Show Answer
  The correct answer is A .
• Question 99: Electric charges on the surface of a conductor would be most evenly distributed if the shape of the conductor is Options:
  A) conical
  B) cubical
  C) cylindrical
  D) parabolic
  E) spherical
  Show Answer
  The correct answer is C .
• Question 100:

  Electrical appliances in homes are normally earthed so that

  Options:
  A) a person touching the appliances is safe from electric shock
  B) both the a.c. and d.c. sources can be used
  C) the appliances are maintained at a higher pd than the earth
  D) the appliances are maintained at a lower pd than the earth
  Show Answer
  The correct answer is A .