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Sunday, 03 May 2026
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Physics Past Questions and Answers

Jamb Physics Questions

Question 221:
Which of the following statements is NOT true of \(\gamma\)-rays?
  • A \(\gamma\)-rays belong to the electromagnetic spectrum
  • B \(\gamma\)-rays do not carry an electron charge
  • C \(\gamma\)-rays obey the inverse cube law in air
  • D The thickness of aluminium which stops b-particule has a negligible effect on \(\gamma\)-radiation
  • E The difference between \(\gamma\)-rays and X-rays is that \(\gamma\)-rays originate from energy charges in the nuclei of atoms, while X-rays comes from energy charges associated with the electron structure of atoms
View Answer & Explanation
Question 222:
A rocket burns 0.01kg of fuel each second and ejects it as a gas with a velocity of 5,000m/s. What force does the gas exert on the rocket?
  • A 500,000N
  • B 500N
  • C 50N
  • D 5,000N
  • E 50,000N
View Answer & Explanation
Question 223:
Which of the following statements is true of a body which is moving in a straight line with uniform acceleration? The velocity of the body
  • A Is also uniform
  • B Must always be zero when the body stops accelerating
  • C Will increase with time in the direction of the acceleration
  • D Is equal to the quotient of distance travelled and time
  • E Is the product of the distance travelled and time
View Answer & Explanation
Question 224:
A heater marked 50W will evaporate 0.005kg of boiling water in 50 seconds. The specific latent heat of vaporization of water in J/kg is
  • A 5.0 x 10<sup style='font-size: smaller;'>6</sup>
  • B 1.0 x 10<sup style='font-size: smaller;'>6</sup>
  • C 2.5 x 10<sup style='font-size: smaller;'>6</sup>
  • D 2.5 x 10<sup style='font-size: smaller;'>5</sup>
  • E 5.0 x 10<sup style='font-size: smaller;'>5</sup>
View Answer & Explanation
Question 225:
A high-resistance voltmeter reads 3.0V when connected across the terminals of a battery on open circuit and 2.6V when the battery supplies a current of 0.2A through a lamp. The resistance of lamp is
  • A 2.00\(\Omega\)
  • B 13.00\(\Omega\)
  • C 0.52\(\Omega\)
  • D 0.13\(\Omega\)
  • E 1.50\(\Omega\)
View Answer & Explanation