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 221: A 5kg block is released from rest on a smooth plane inclined at an angle of 30^o to the horizontal. What is the acceleration down the plane? [g = 10ms^-2] Options:
  A) 5.0 ms^-2
  B) 5.8 ms^-2
  C) 8.7 ms^-2
  D) 25.0 ms^-2
  Show Answer
  The correct answer is A .
• Question 222: If a load of mass 10N stretched a cord by 1.2cm, what is the total work done? Options:
  A) 6.0 x 10^-2J
  B) 7.6 x 10^-2J
  C) 1.8 x 10^-2J
  D) 6.6 x 10^-2J
  Show Answer
  The correct answer is A .
• Question 223:

  

  What is the resistance of the circuit shown above

  Options:
  A) 4Ω
  B) 11Ω
  C) 19/5Ω
  D) 17/4Ω
  E) 8Ω
  Show Answer
  The correct answer is E .
• Question 224: Which of the following factors affects the speed of sound in air? i. Temperature ii. pressure iii. Frequency Options:
  A) i only
  B) ii only
  C) i and ii only
  D) ii and iii only
  Show Answer
  The correct answer is C .
• Question 225: A ball is moving at 18ms^-1 in a direction inclined at 60^o to the horizontal. The horizontal component to its velocity is Options:
  A) 9√3ms^-1 ·
  B) 6√3ms^-1 ·
  C) 8√3ms^-1 ·
  D) 9ms^-1 ·
  Show Answer
  The correct answer is D .
• Question 226: The relationship between the period T and the length T of a smile pendulum is T = 2$\pi$ $(\frac{I}{g}{)}^{\frac{1}{2}}$. From experiment data of T and I, one can obtain the following graphs, i. T vs.I ii. T vs I² iii. T² vs. I iv. T vs $\sqrt{I}$ v. logT vs logI. Which of the following graphs, are linear? Options:
  A) all
  B) only i and ii
  C) only iii and iv
  D) iii,iv and v
  E) none of them
  Show Answer
  The correct answer is D .
• Question 227: A 10g mass placed on the pan of a spring balance causes an extension of 5cm. If a 15g mass is placed on the pan of the same spring balance, the extension is Options:
  A) 3.3cm
  B) 6.5cm
  C) 7.5cm
  D) 10.8cm
  E) 15.0cm
  Show Answer
  The correct answer is C .
• Question 228: A bead traveling on a straight wire is brought to rest at 0.2m by friction. If the mass of the bead is 0.01kg and the coefficient of friction between the bead and the wire is 0.1 determine the work done by the friction Options:
  A) $2\times {10}^{-4}J$
  B) $2\times {10}^{-3}J$
  C) $2\times {10}^{1}J$
  D) $2\times {10}^{2}J$
  Show Answer
  The correct answer is B .
• Question 229: A 100kg box is pushed along a road with force of 500N. If the box moves with a uniform velocity, the coefficient of friction between the box and the road is Options:
  A) 0.4
  B) 1.0
  C) 0.8
  D) 0.5
  Show Answer
  The correct answer is D .
• Question 230: A man stands in front of a tall wall and produces a sound. If he receives the echo of the sound two seconds later, calculate his distance from the wall. (The speed of sound in air is 330ms^-1) Options:
  A) 600m
  B) 400m
  C) 330m
  D) 328m
  E) 165m
  Show Answer
  The correct answer is C .