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 2311:

  A relative density bottle has a mass of 19 g when empty. When it is completely filled with water, its mass is 66 g. What will be its mass if completely filled with alcohol of relative density 0.8?

  Options:
  A) 47 g
  B) 52.8 g
  C) 37.6 g
  D) 56.6 g
  Show Answer
  The correct answer is D .
• Question 2312: When left in a freezer, a bottle full of water cracks on freezing into ice because of the Options:
  A) increase in the volume of water
  B) contraction of the bottle
  C) expansion of the bottle
  D) decrease in the volume of water
  Show Answer
  The correct answer is A .
• Question 2313: A cell of internal resistance 1Ω supplies current to an external resistor of 3Ω. The efficiency of the cell is Options:
  A) 25%
  B) 33%
  C) 50%
  D) 75%
  Show Answer
  The correct answer is D .
• Question 2314:

  

  The fig above shows two connected bodies of masses M1 and M2 in equilibrium under gravity. The tension in the upper string is

  Options:
  A) (m1-m2)g
  B) m1g
  C) m2g
  D) (m1+m2)g
  Show Answer
  The correct answer is D .
• Question 2315: 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 2316: The refractive index of liquid is 1.5. If the velocity of light in vacuum is 3.0 x 10⁸ms^-1, the velocity of light in the liquid is Options:
  A) 1.5 x 10⁸m^-1
  B) 2.0 x 10⁸m^-1
  C) 3.0 x 10⁸m^-1
  D) 4.5 x 10⁸m^-1
  E) 9.0 x 10⁸m^-1
  Show Answer
  The correct answer is B .
• Question 2317: An electron makes a transition from - 1.60 eV energy level to - 10.4eV energy level Calculate the energy loss due to the transition. Options:
  A) 16.64eV
  B) 12.00eV
  C) 10.40eV
  D) 8.80eV
  E) 6.50eV
  Show Answer
  The correct answer is D .
• Question 2318:

  

  In fig 9 the value of R is

  Options:
  A) 3Ω
  B) 4Ω
  C) 5Ω
  D) 6Ω
  Show Answer
  The correct answer is D .
• Question 2319: An object placed 10cm from a concave mirror of focal length 5cm would have its image Options:
  A) at the centre of convature
  B) at the radius of curvature
  C) at infinity
  D) 10 cm from the focus
  Show Answer
  The correct answer is A .
• Question 2320: The fundamental property of a propagating wave which depends only on the source and not the medium of propagation is the? Options:
  A) wavelength
  B) harmonies
  C) frequency
  D) velocity
  Show Answer
  The correct answer is B .