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 31:

  A magnetic needle is suspended first at the earth's north magnetic pole and then at a point on the magnetic equator. The respective angles between the needle and the horizontal are

  Options:
  A) 0${}^o$ and 0${}^o$
  B) 60${}^o$ and 60${}^o$
  C) 90${}^o$ and 90${}^o$
  D) 90${}^o$ and 0${}^o$
  Show Answer
  The correct answer is D .
• Question 32:

  

  In the diagram above, a rod 50 cm long of uniform cross-section is suspended horizontally on a fulcrum, F, by the action of two forces. What is the weight of the rod?

  Options:
  A) 40N
  B) 80N
  C) 120N
  D) 200N
  Show Answer
  The correct answer is B .
• Question 33:

  The pitch of an acoustic device can be increased by

  Options:
  A) decreasing the loudness
  B) increasing the intensity
  C) increasing the frequency
  D) decreasing the intensity
  Show Answer
  The correct answer is C .
• Question 34:

  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 35:

  

  The diagram above represents the graph of the force F applied in stretching a spiral spring against the corresponding extension (X). The force constant of the spring is

  Options:
  A) 20 Nm^-1
  B) 40 Nm^-1
  C) 30 Nm^-1
  D) 10 Nm^-1
  Show Answer
  The correct answer is A .
• Question 36: When a box of mass 45kg, is given an initial speed of 5ms^-1 it slides along a horizontal floor a distance of 3m before coming to a rest. what is the coefficient of kinetic friction between the box and the floor? (G = 10ms^-2) Options:
  A) $\frac{5}{6}$
  B) $\frac{5}{12}$
  C) $\frac{1}{3}$
  D) $\frac{2}{3}$
  Show Answer
  The correct answer is B .
• Question 37: A man walks 8km north and then 5km in a direction 60^o east of north. Find the distance from his starting point Options:
  A) 11.36km
  B) 12.36km
  C) 13.00km
  D) 14.36km
  Show Answer
  The correct answer is A .
• Question 38: When the length I of a piece of wire under constant tension is varied, the relationship of the frequency of the vibration f$\alpha$/ is Options:
  A) f$\alpha$/
  B) f$\alpha \frac{1}{I^2}$
  C) f $\alpha \sqrt{I}$
  D) f$\alpha \frac{1}{1}$
  Show Answer
  The correct answer is D .
• Question 39:

  Which of the following is not correct about the molecules of a substance in a gaseous state. They?

  Options:
  A) are in a constant state of motion
  B) have different speeds
  C) have a temperature which is measured by the average kinetic energy
  D) The collision between the gases is perfectly inelastic
  Show Answer
  The correct answer is D .
• Question 40:

  The terminals of a battery of emf 24.0 V and internal resistance of 1.0 Ω is connected to an external resistor 5.0 Ω. Find the terminal p.d.

  Options:
  A) 18.0V
  B) 12.0V
  C) 16.0V
  D) 20.0V
  Show Answer
  The correct answer is D .