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 2721: Which of the following statements is correct about light and sound waves? Both Options:
  A) are longitudinal waves
  B) are transverse waves
  C) have the same velocity in air
  D) need a medium for propagation
  E) transmit energy
  Show Answer
  The correct answer is E .
• Question 2722:

  400g of cold water is added to 200g of water at 70°C. If they are properly mixed and the temperature of the mixture is 300°C. calculate the initial temperature of the cold water. (Neglect the heat absorbed by the container)

  Options:
  A) 10°C
  B) 15°C
  C) 20°C
  D) 30°C
  E) 40°C
  Show Answer
  The correct answer is A .
• Question 2723: Which of the following motions will be produced by a pair of equal, opposite and non-collinear parallel forces acting on a body? Options:
  A) Oscillatory
  B) Random
  C) Rotational
  D) Translational
  E) Vibratory
  Show Answer
  The correct answer is D .
• Question 2724: 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 2725: A car accelerate uniformly from rest at 4 ms^-2. How far will it travel in the fifth complete second? Options:
  A) 100 m
  B) 50m
  C) 32 m
  D) 18 m
  Show Answer
  The correct answer is D .
• Question 2726: When the volume of a given mass of gas is halved and its temperature doubled, the pressure Options:
  A) remains constant
  B) increases by a factor of 4
  C) increases by a factor of 3
  D) decreases by a factor of 4
  Show Answer
  The correct answer is B .
• Question 2727:

  

  In the figure above, what is the angle of reflection of the ray of light at mirror M?

  Options:
  A) ${90}^{\circ }$
  B) ${60}^{\circ }$
  C) ${45}^{\circ }$
  D) ${30}^{\circ }$
  Show Answer
  The correct answer is B .
• Question 2728:

  The rate of diffusion of gases increases with increase(s) in I. density

  II. temperature

  III, mass. Which is/are correct?

  Options:
  A) I only
  B) II only
  C) I and II only
  D) II and III only
  E) I, II and III
  Show Answer
  The correct answer is B .
• Question 2729: Three electric cells each of e.m.f 1.5V and internal resistance of 1.0$\mathrm{\Omega }$ are connected in parallel across an external resistance of $\frac{2}{3}$$\mathrm{\Omega }$. Calculate the value of the current in the resistor Options:
  A) 0.5 A
  B) 0.9A
  C) 1.5A
  D) 4.5A
  Show Answer
  The correct answer is C .
• Question 2730: The r.m.s value of a supply voltage is quoted at 200v. What is the approximate peak value of the voltage? Options:
  A) 200volts
  B) 300volts
  C) 283volts
  D) 250volts
  Show Answer
  The correct answer is C .