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 1101:

  The pitch of a screw jack is 0.45cm and the arm is 60cm long. If the efficiency of the Jack is 75/π %, calculate the mechanical advantage.

  Options:
  A) 400
  B) 300
  C) 200
  D) 150
  Show Answer
  The correct answer is C .
• Question 1102: The force of attraction between two point masses is 10^-4N when the distance between them is 0.18m. If the distance is reduced to 0.06m, calculate the force. Options:
  A) 1.1 x 10^-5N
  B) 3.3 x 10^-5N
  C) 3.0 x 10^-4N
  D) 9.0 x 10^-4N
  Show Answer
  The correct answer is D .
• Question 1103:

  

  The diagram above represents the stress-strain graph for a typical metal rod. What does the X represent?

  Options:
  A) Breaking point
  B) Yield point
  C) Elastic limit
  D) Proportional limit
  Show Answer
  The correct answer is A .
• Question 1104: The gravitational field intensity at a location X, in space, is two-fifths of its value on the earth’s surface. If the weight of an object at X is 4.80N. what is its weight on the earth? Options:
  A) 1.92N
  B) 2.88N
  C) 6.72N
  D) 8.00N
  E) 12.00N
  Show Answer
  The correct answer is E .
• Question 1105: Which of the following assumptions is made in a simple pendulum experiment? the Options:
  A) suspending string is inextensible
  B) bob has a finite size
  C) bob has a definite mass
  D) initial angle of oscillation must be large
  Show Answer
  The correct answer is A .
• Question 1106: Which of the following statements is true of nuclear fission? Options:
  A) Heavy nuclei combine to form new element
  B) Protons are used in bombarding heavy nucleus
  C) The sum of the masses of the products is greater than the mass of the original substance
  D) Two light nuclei are made to combine to form a heavy nucleus
  E) Very large amount of energy is released.
  Show Answer
  The correct answer is E .
• Question 1107: A series RLC circuit is said to resonate, when Options:
  A) capacitive reactance is zero
  B) conductance is maximum
  C) current is minimum
  D) impedance is minimum
  E) inductive reactance is zero
  Show Answer
  The correct answer is D .
• Question 1108: The terrestrial telescope has one extra lens more than the astronomical telescope. The extra lens is for Options:
  A) improving the sharpness
  B) creating an inverted image
  C) magnification of the image
  D) erection of the image
  Show Answer
  The correct answer is D .
• Question 1109:

  A train of mass 1600 kg attains a speed of 25 ms${}^{-1}$ in 20 seconds. The power developed in the engine is?

  Options:
  A) 2.5 KW
  B) 80 KW
  C) 25 KW
  D) 50 KW
  Show Answer
  The correct answer is D .
• Question 1110: A copper wire was subjected to a tensile stress of 7.7 x 10⁷ x 10 Nm^-2. calculate strain of the wire.
  [young modules = 1.1 x 10¹¹ Nm^-2] Options:
  A) 2. 0 x 10^-5
  B) 7.0 x 10^-3
  C) 7.0 x 10^-4
  D) 2.2 x 10^-4
  Show Answer
  The correct answer is C .