Search SchoolNGR

Saturday, 15 August 2026
Register . Login

Physics Past Questions and Answers

Topic: conduction as mode of heat transfer

Jamb Physics Questions - conduction as mode of heat transfer

Question 1:
Which of the following properties makes metals ideal for cooking utensils?
  • A High coefficient of expansion
  • B Good conduction of heat
  • C Low specific heat capacity
  • D Poor radiation of heat
View Answer & Explanation
Question 2:
When heat is applied to one end of a metal rod, the molecules at the other end soon begin to vibrate with greater amplitude than before because heat has been transferred by
  • A Radiation
  • B Convection
  • C Conduction
  • D Evaporation
View Answer & Explanation
Question 3:
An insulated rod when rubbed with a material acquires
  • A A negative charge if it is made of glass and rubbed with silk
  • B No charge if it is made of glass and rubbed with fur
  • C No charge if it is made of copper and rubbed with silk
  • D A positive charge if it is made of copper and rubbed with fur
View Answer & Explanation
Question 4:
When an ebolite rod is rubbed with fur, it has
  • A No charge at all
  • B A negative charge
  • C A positive charge
  • D Negative and positive charges
View Answer & Explanation
Question 5:
When impurities are added to semi-conductors, the conductivity of the semi-conductor
  • A Increases then decreases
  • B Increases
  • C Decreases
  • D Remains constant
View Answer & Explanation