Physics ยท Science General

Heat Transfer Mechanisms

877 Questions

Heat Transfer Mechanisms deal with the movement of thermal energy through conduction, convection, and radiation. It involves practical applications like ocean heat storage and atmospheric heating. These fundamental physics concepts are frequently asked in general science sections.

Thermal conductionHeat convectionThermal radiationSpecific heatStates of matter

Heat Transfer Mechanisms Questions

Multiple choice

No external heat is required to start

  1. Simultaneous combustion

  2. Spreading fire combustion

  3. Spontaneous combustion

  4. Splendid combustion
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The spontaneous processes automatically starts and do not require any external agent.

Multiple choice

Uday dipped a plastic spoon in a cup of ice-cream. He observed that the spoon did not become cold. Which of the following is the correct reason of his observation?

  1. Heat transfers from spoon to ice-cream.

  2. Heat transfers from ice-cream to spoon.

  3. No heat transfer takes place between the spoon and ice-cream.

  4. Plastic spoon is a good conductor of heat.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Plastic is a poor conductor of heat, i.e. it is an insulator. Thus, no heat transfer takes place and the spoon does not become cold.