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Monday, 04 May 2026
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Physics Past Questions and Answers

Jamb Physics Questions

Question 91:
It is known that a neutron exists in a light atomic nucleus. Which of the following also exists in the nucleus?
  • A An electron
  • B A \(\beta\)-particle
  • C An \(\alpha\)-particle
  • D A proton
  • E An atom
View Answer & Explanation
Question 92:
A weight of 1000 grams hangs from a lever 20cm to the fulcrum. At the left is a 500-gram weight 20cm from the fulcrum, and a 200-gram weight x cm away from the fulcrum. What is the value of x that will make the lever balanced?
  • A 50cm
  • B 20cm
  • C 10cm
  • D 30cm
  • E 70cm
View Answer & Explanation
Question 93:
Radio carrier waves are generated by causing electrons to oscillate rapidly in
  • A A microphone
  • B A television camera
  • C An antenna
  • D Coaxial cables
  • E A transmitter
View Answer & Explanation
Question 94:
Which of the following statements is correct? Silvered walls of a vacuum flask are used to prevent
  • A Heat loss due to conduction
  • B Vacuum loss
  • C Heat entry into the inner flask due to convection
  • D Heat loss due to radiation
  • E Heat loss due to convection
View Answer & Explanation
Question 95:
A concave lens of focal length 20cm form an image 1/2 the size of the object. The object distance is
  • A 100cm
  • B \( \frac{100}{q} \)
  • C 60cm
  • D \( \frac{60}{7} \)
  • E None of the above
View Answer & Explanation