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 131: A vibrator of frequency 60Hz is used in generating transverse stationary waves in a long thin wire, If the average distance between successive nodes on the wire is 45cm, find the speed of the transverse waves in the wire. Options:
  A) 27ms^-1
  B) 54ms^-1
  C) 90ms^-1
  D) 108ms^-1
  Show Answer
  The correct answer is A .
• Question 132: Calculate the electric field intensity between two plates of potential difference 6.5V when separated by a distance of 35cm. Options:
  A) 18.57NC${}^{-1}$
  B) 53.06NC${}^{-1}$
  C) 2.28NC${}^{-1}$
  D) 0.80NC${}^{-1}$
  Show Answer
  The correct answer is A .
• Question 133: Two rays of light from a point below the surface of water are equally inclined to each other at 60^o in water. What is the angle between the rays when they emerge into air? (Take the refractive index of water to be $\frac{4}{3}$) Options:
  A) 41.8^o
  B) 44.1^o
  C) 60.0^o
  D) 83.6^o
  E) 120.0^o
  Show Answer
  The correct answer is D .
• Question 134:

  Water and Kerosine are drawn respectively into the two limbs of a Hare's apparatus. The destiny of water is 1.0gcm${}^{-3}$ and the density of kerosine is 0.80gcm${}^{-3}$. If the height of the water column is 20.0cm, calculate the height of the kerosine column.

  Options:
  A) 1.6cm
  B) 16.0cm
  C) 20.0cm
  D) 25.0cm
  Show Answer
  The correct answer is D .
• Question 135: When ${}_{82}^{210}Pb$ decays to ${}_{80}^{206}Pb$, it emits Options:
  A) two alpha and two beta particles
  B) an alpha particle
  C) one beta particle
  D) one alpha and one beta particle
  Show Answer
  The correct answer is B .
• Question 136:

  When the breaks in a car are applied, the frictional force on the tyresis?

  Options:
  A) a disadvantage because it is in the direction of the motion of the car
  B) a disadvantage because it is in the opposite direction of the motion of the car
  C) an advantage because it is in the direction of the motion of the car
  D) an advantage because it is in the opposite direction of the motion of the car
  Show Answer
  The correct answer is D .
• Question 137: A weightless vessel of dimensions 4m x 3m x 2m is filled with a liquid of density 1000kgm^-3 and sealed. What is the maximum pressure this container can exert on a flat surface? [g = 10ms^-2] Options:
  A) 9 x 10⁴NM^-2
  B) 4 x 10⁴NM^-2
  C) 3 x 10⁴NM^-2
  D) 2 x 10⁴NM^-2
  Show Answer
  The correct answer is D .
• Question 138:

  An alternating current can induce voltage because it has

  Options:
  A) ripple value
  B) varying magnetic field
  C) weaker magnetic field than direct current
  D) high peak value
  Show Answer
  The correct answer is B .
• Question 139: 1,000 identical drops of oil of density 500kgm^-3 have a total mass of 5 x 10^-4kg. One of the drops forms a thin film of area 0.5m² on water. The thickness of the film is Options:
  A) 2 x 10^-8m
  B) 2 x 10^-9m
  C) 2 x 10^-7m
  D) 3 x 10^-9m
  E) 2.8 x 10^-8m
  Show Answer
  The correct answer is B .
• Question 140: A weightless vessel of dimensions 4m x 3m x 2m is filled with a liquid of density 1000kgm^-3 and sealed. What is the maximum pressure this container can exert on a flat surface? [g = 10ms^-2] Options:
  A) 9 x 10⁴NM^-2
  B) 4 x 10⁴NM^-2
  C) 3 x 10⁴NM^-2
  D) 2 x 10⁴NM^-2
  Show Answer
  The correct answer is D .