Search SchoolNGR

Tuesday, 05 May 2026
Register . Login

Physics Past Questions and Answers

Jamb Physics Questions

Question 86:
Which of the following electromagnetic waves has the shortest wavelength?
  • A Radio waves
  • B X-rays
  • C Infra-red
  • D Blue light
  • E Ultraviolet
View Answer & Explanation
Question 87:
All the heat generated in a 5 ohms resistor by 2A flowing for 30 seconds is used to evaporate 5g of a liquid at its boiling point. Which of the following is the correct value of the specific latent heat of the liquid?
  • A 120J
  • B 60Jg<sup style='font-size: smaller;'>-1</sup>
  • C 120Jg<sup style='font-size: smaller;'>-1</sup>
  • D 1500J
  • E 1500Jg<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 88:
The speed of light in air is 3 x 108ms-1. If the refractive index of light from air-to-water is \(\frac{4}{3}\), then which of the following is the correct value of the speed of light in water?
  • A 4 x 10<sup style='font-size: smaller;'>8</sup>ms<sup style='font-size: smaller;'>-1</sup>
  • B 2.25 x 10<sup style='font-size: smaller;'>8</sup>ms<sup style='font-size: smaller;'>-1</sup>
  • C \(\frac{4}{9}\) x 10<sup style='font-size: smaller;'>8</sup>ms<sup style='font-size: smaller;'>-1</sup>
  • D 2.25 x 10<sup style='font-size: smaller;'>2</sup>ms<sup style='font-size: smaller;'>-1</sup>
  • E 4.33 x 10<sup style='font-size: smaller;'>8</sup>ms<sup style='font-size: smaller;'>-1</sup>
View Answer & Explanation
Question 89:
On which of the following is the operation of a moving coil galvanometer based?
  • A Magnetic effect of electric current
  • B Electromagnetic induction
  • C Chemical reaction produced by electricity
  • D Force on current carrying conductor in a magnetic field
  • E Electrical energy and power
View Answer & Explanation
Question 90:
A body is released from rest and allowed to fall freely from a given height under gravity. The kinetic energy at its half-way point is
  • A A little above half of its initial energy
  • B A little below half of its initial energy
  • C A half of its initioal energy
  • D A little above its initial energy
  • E A little below its initial energy
View Answer & Explanation