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 1841:

  The inside portion of part of a hollow metal sphere of diameter 20cm is polished. The portion will therefore form a?

  Options:
  A) concave mirror of focal length 5cm
  B) concave mirror of focal length 10cm
  C) convex mirror of focal length 5cm
  D) convex mirror of focal length 10cm
  Show Answer
  The correct answer is C .
• Question 1842: A plane inclined at an angle of 30^o to the horizontal has an efficiency of 60%. The force parallel to the plane required to push a load of 120N uniformly up the plane is Options:
  A) 60N
  B) 100N
  C) 120N
  D) 200N
  E) 240N
  Show Answer
  The correct answer is B .
• Question 1843: The space between the double glass walls of a thermos flask is evacuated space are silvered. The residual source of heat loss takes place by Options:
  A) convection
  B) radiation from the surface
  C) conduction through the stopper and the glass
  D) conduction across the walls
  Show Answer
  The correct answer is C .
• Question 1844: Find the standard deviation of the following data -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5 Options:
  A) 2
  B) 3
  C) √10
  D) √11
  Show Answer
  The correct answer is C .
• Question 1845: At what respective value of a, b, and c would the unit of work, the joule, be dimensionally similar to M^a L^b T^c? Options:
  A) 1, – 2, 1
  B) 1, 2, – 2
  C) 1, 1, –2
  D) 2, 2, 1
  Show Answer
  The correct answer is B .
• Question 1846:

  The equation of a wave traveling along the positive x-direction is given by; y = 0.25 x 10${}^{-3}$ sin (500t - 0.025x). Determine the angular velocityof the wave motion.

  Options:
  A) 0.25 x 10${}^{-3}$rads${}^{-1}$
  B) 0.25 x 10${}^{-1}$rads${}^{-1}$
  C) 5.00 x 10${}^2$rads${}^{-1}$
  D) 2.50 x 10${}^3$rads${}^{-1}$
  Show Answer
  The correct answer is C .
• Question 1847: A given mass of an ideal gas occupies a volume V at a temperature T and under a pressure p. If the pressure is increased to 2p and the temperature reduced to $\frac{1}{2T}$, then the percentage change in the volume of the gas is Options:
  A) 0%
  B) 25%
  C) 75%
  D) 300%
  E) 400%
  Show Answer
  The correct answer is C .
• Question 1848:

  Heat is supplied uniformly at the rate of 100W to 1.0 x 10${}^{-2}$kg of a liquid for 20 seconds. If the temperature of the liquid rises by 5${}^o$C, then the specific heat capacity of the liquid is

  Options:
  A) 2.0 x 10${}^2$Jkg${}^{-}1$K${}^{-}1$
  B) 2.0 x 10${}^2$Jkg${}^{-}1$
  C) 4.0 x 10${}^4$Jkg${}^{-}1$K${}^{-}1$
  D) 4.0 x 10${}^4$Jkg${}^{-}1$
  Show Answer
  The correct answer is C .
• Question 1849: The colours seen on soap bubbles are due to Options:
  A) Diffraction
  B) Refraction
  C) Dispersion
  D) Interference
  Show Answer
  The correct answer is D .
• Question 1850:

  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 .