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 21:

  A missile is launched with a speed of 75 ms-1 at an angle of 22° above the surface of a warship. Find the horizontal range achieved by the missile. Ignore the effects of air resistance.

  [Take g = 10 ms-2]

  Options:
  A) 195
  B) 271 m
  C) 391 m
  D) 136 m
  Show Answer
  The correct answer is C .
• Question 22: An object is placed 15cm in front of a concave mirror of radius 40cm. The image formed Options:
  A) virtual and 60cm behind the mirror
  B) real and 60cm behind the mirror
  C) virtual and at infinity
  D) real and at infinity
  E) virtual and 40cm from the mirror
  Show Answer
  The correct answer is A .
• Question 23:

  Particles of mass 10${}^{-2}$kg is fixed to the tip of a fan blade which rotates with angular velocity of 100rad${}^{-1}$. If the radius of the blade is 0.2m, the centripetalforce is?

  Options:
  A) 2N
  B) 20N
  C) 200N
  D) 400N
  Show Answer
  The correct answer is B .
• Question 24:

  

  In the circuit diagram above, the ammeter reads a current of 3A when R is 5 ohms and 6A when R is 6 ohms,the value of the unknown resistance X is

  Options:
  A) 1
  B) 2
  C) 3
  D) 4
  Show Answer
  The correct answer is A .
• Question 25:

  

  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 26: What is the approximate critical angle for total internal reflection for diamond if the refractive index of diamond is 2.42? Options:
  A) 21^o
  B) 22^o
  C) 23^o
  D) 24^o
  Show Answer
  The correct answer is D .
• Question 27: The mass of a specific gravity bottle is 15.2g when it is empty. it is 24.8g when filled with kerosene and 27.2g when filled with distilled water. Calculate the relative density of kerosene Options:
  A) 1.25
  B) 1.10
  C) 0.90
  D) 0.80
  Show Answer
  The correct answer is D .
• Question 28: Which of the following is common to evaporation and boiling? They Options:
  A) take place at any temperature
  B) are surface phenomena
  C) involve change of state
  D) take place at a definite pressure
  Show Answer
  The correct answer is C .
• Question 29:

  A man walks 1km due east and then 1 km due north. His displacement is

  Options:
  A) √2km N 45°E
  B) 1km N 30°E
  C) 1km N 15°E
  D) √2km N 60°E
  Show Answer
  The correct answer is A .
• Question 30: A wire P has half the diameter and half the length of a wire Q of similar material. The ratio of the resistance of P to that of Q is Options:
  A) 8 : 1
  B) 4 : 1
  C) 2 : 1
  D) 1 : 1
  E) 1 : 4
  Show Answer
  The correct answer is C .