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Friday, 19 June 2026
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Physics Past Questions and Answers

Jamb 2023 Physics Questions

Question 51:
A parallel plate capacitor separated by an air gap is made of \(0.8m^2\) tin plates and 20 mm apart. It is connected to 120 V battery. What is the charge on each plate? Take \(ε_o\) = \(8.85×10^-12 Fm^-1\)
  • A 3.54nC
  • B 42.5nC
  • C 35.4nC
  • D 4.25nC
View Answer & Explanation
Question 52:
What is the amount of heat required to raise the temperature of a 0.02 kg of ice cube from \(-10^oC\) to \(10^oC\) ? [specific latent heat of fusion of ice = 3.34 x \(10^5\)  \(Jkg^-1\), Specific heat capacity of water = 4200 \(Jkg^-1\) \(k^-1\)   Specific heat capacity of ice = 2100 \(Jkg^-1\) \(k^-1\)
  • A 6680 J
  • B 1680 J
  • C 7520 J
  • D 7940 J
View Answer & Explanation
Question 53:
Which of the following thermometers measures temperature from the thermal radiation emitted by objects?
  • A Pyrometer thermometer
  • B Platinum resistance thermometer
  • C Thermocouple thermometer
  • D Constant pressure gas thermometer
View Answer & Explanation
Question 54:
A 400 N box is being pushed across a level floor at a constant speed by a force P of 100 N at an angle of 30.0° to the horizontal, as shown in the the diagram below. What is the coefficient of kinetic friction between the box and the floor?  
  • A 0.19
  • B 0.24
  • C 0.40
  • D 0.22
View Answer & Explanation
Question 55:
Light of wavelength 589 nm in vacuum passes through a piece of fused quartz of index of refraction n = 1.458. What is the frequency of the light in fused quartz? [Speed of light c = \(3.00×10^8 ms^{-1}\)]
  • A \(5.09×10^{15}\)Hz
  • B \(5.09×10^{14}\) Hz
  • C \(1.77×10^{15}\) Hz
  • D \(1.77×10^{14}\) Hz
View Answer & Explanation