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 2111:

  The pinhole camera works on

  Options:
  A) the principle of the reversibility of light
  B) the principle of the rectilinear propagation of light
  C) Huygen’s principle
  D) the principle of total internal reflection of light
  Show Answer
  The correct answer is B .
• Question 2112: Of two identical tuning forks with natural frequency 256Hz, one is loaded so that 4 beats per second are heard when they are sounded together. What is the frequency of the loaded tuning fork? Options:
  A) 260Hz
  B) 252Hz
  C) 248Hz
  D) 264Hz
  E) 258Hz
  Show Answer
  The correct answer is A .
• Question 2113: A conductor has a diameter of 1.00 mm and length 2.00m. if the resistance of the material is 0.1Ω, its resistivity is? Options:
  A) 2.55 x 10⁵ Ωm
  B) 2.55 x 10² Ωm
  C) 3.93 x 10^-6 Ωm
  D) 3.93 x 10^-8 Ωm
  Show Answer
  The correct answer is D .
• Question 2114: A shooter wants to fire a bullet in such a way that its horizontal range is equal to three times its maximum height. At the what angle should he fire the bullet to achieve this? Options:
  A) 68^o
  B) 53^o
  C) 30^o
  D) 45^o
  Show Answer
  The correct answer is B .
• Question 2115: The spiral spring of a spring balance is 25.0cm long when 5N hangs on it and 30cm long, when the weight is 10N. What is the length of the spring if the weight is 3N assuming Hooke's law is obeyed? Options:
  A) 15.0cm
  B) 17.0cm
  C) 20.0cm
  D) 23.0cm
  Show Answer
  The correct answer is D .
• Question 2116:

  When a water droplet is placed on a freshly cut piece of wood, it spreads out to form a thin layer because the wood is

  Options:
  A) not at equilibrium with the water
  B) cohesive to water
  C) at equilibrium with the water
  D) adhesive to water
  Show Answer
  The correct answer is D .
• Question 2117: A few grains of table salt were put in a cup of water, kept at constant temperature and left undisturbed. Eventually all the water tasted salty. The action is due to Options:
  A) convection
  B) osmosis
  C) capillarity
  D) diffusion
  E) conductivity
  Show Answer
  The correct answer is D .
• Question 2118: Which of the following is a correct explanation of the inertia of a body? Options:
  A) ability to overcome the earth's gravity
  B) reluctance to stop moving
  C) readiness to start moving
  D) reluctance to start moving and its readiness to stop moving once it has begun to move
  E) reluctance to start moving its reluctance to stop moving once it has begun to move
  Show Answer
  The correct answer is E .
• Question 2119: Four cells each of e.m.f 1.5V and internal resistance of 4Ω are connected in parallel. What is the effective e.m.f. and internal resistance of the combination? Options:
  A) 6.0V, 16Ω
  B) 6.0V, 1Ω
  C) 1.5V, 4Ω
  D) 1.5V, 1Ω
  Show Answer
  The correct answer is D .
• Question 2120: If an object is placed in front of two mirrors inclined at 90^o, how many images will be formed? Options:
  A) five
  B) four
  C) three
  D) two
  Show Answer
  The correct answer is C .