The process of heat transfer in a solid metal rod is MCQ with Answer and Explanation

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The process of heat transfer in a solid metal rod is

A. Radiation

B. Convection

C. Sublimation

D. Conduction

Answer: Option D

Solution (By JKSSB Mock Tests)

In solids, heat flows by conduction (lattice vibrations and free electrons). Metals are good conductors due to free electrons. Convection in fluids, radiation no medium.

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Practice More Physics Questions

Question #1

A pressure cooker reduces cooking time because

A. Low pressure decreases boiling point

B. It absorbs more heat

C. More water is used

D. High pressure increases boiling point

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Correct Answer: Option D

Explanation:
Higher pressure raises boiling point, so water can reach temperatures above 100°C, cooking food faster. At high altitudes, pressure cooker compensates for lower atmospheric pressure.

This question belongs to: Science Physics

Question #2

A car of mass 1000 kg moves with velocity 20 m/s. Kinetic energy is

A. 400 kJ

B. 200 kJ

C. 10 kJ

D. 20 kJ

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Correct Answer: Option B

Explanation:
KE = ½×1000×400 = 200,000 J = 200 kJ.

This question belongs to: Science Physics

Question #3

The dimensional formula for torque is same as

A. Force

B. Power

C. Work

D. Impulse

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Correct Answer: Option C

Explanation:
Torque = force × distance = [ML²T⁻²], same as work and energy.

This question belongs to: Science Physics

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