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 1071: A rocket burns fuel at the rate of 10kgs^-1 and ejects it with velocity of 5 x 10³ms^-1. The thrust exerted by the gas on the rock is Options:
  A) 2.5 x 10⁷N
  B) 5.0 x 10⁴N
  C) 5.0 x 10²N
  D) 2.0 x 10^-3N
  Show Answer
  The correct answer is B .
• Question 1072:

  If the frequency of an emitted x-ray is 1.6 x 10${}^{16}$Hz, the accelerating potential is?

  [e = 1.6 x 10${}^{-19}$J, h = 6.63 x 10-${}^{34}$Js]

  Options:
  A) 6630.0V
  B) 663.0V
  C) 66.3V
  D) 6.6V
  Show Answer
  The correct answer is C .
• Question 1073: 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 .
• Question 1074: 40m³ of liquid is mixed with 60m³ of another liquid Q. If the density of P and Q are 1.00kgm^-3 and 1.6kgm^-3 respectively, what is the density of the mixture? Options:
  A) 0.05kgm^-3
  B) 1.25kgm^-3
  C) 1.30kgm^-3
  D) 1.36kgm^-3
  Show Answer
  The correct answer is D .
• Question 1075: An object is weighted at different locations on the earth. What will be the right observation? Options:
  A) Both the mass and weight are constant
  B) Both the mass and weight vary
  C) the mass is constant while the weight varies
  D) the weight is constant while the mass varies
  Show Answer
  The correct answer is C .
• Question 1076:

  

  The current I in the fig above is

  Options:
  A) 4.00A
  B) 1.30A
  C) 0.80A
  D) 0.75A
  Show Answer
  The correct answer is A .
• Question 1077:

  A current of 0.5 A flows through a resistor when connected to a 40 V battery. How much energy is dispatched in 2 minutes?

  Options:
  A) 2400 J
  B) 9600 J
  C) 1500 J
  D) 1200 J
  Show Answer
  The correct answer is A .
• Question 1078:

  

  In the diagram above, if each of the resistors can dissipate a maximum of 18W without becoming excessively heated, what is the maximum power the circuit can dissipate?

  Options:
  A) 27W
  B) 18W
  C) 9W
  D) 5W
  Show Answer
  The correct answer is A .
• Question 1079: The motion of smoke particles from a chimney is typical of? Options:
  A) random motion
  B) circular motion
  C) rotational motion
  D) oscillatory motion
  Show Answer
  The correct answer is A .
• Question 1080: When a nucleus is formed by bringing protons and neutrons together, the actual mass of the formed nucleus is less than the sum of the masses of the energy equivalent of this mass difference is the Options:
  A) lost energy
  B) work function
  C) binding energy
  D) stability energy
  Show Answer
  The correct answer is C .