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. Conduction

D. Sublimation

Answer: Option C

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 body of mass 4 kg is raised from height 2 m to 8 m. Increase in potential energy (g=10) is

A. 240 J

B. 80 J

C. 400 J

D. 320 J

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Correct Answer: Option A

Explanation:
ΔPE = mgΔh = 4×10×(8-2) = 4×10×6 = 240 J.

This question belongs to: Science Physics

Question #2

A wave of frequency 60 Hz has period

A. 60 s

B. 1/60 s

C. 0.0167 s

D. 0.6 s

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Correct Answer: Option B

Explanation:
T = 1/60 s.

This question belongs to: Science Physics

Question #3

The power of a lens is measured in

A. Watt

B. Lux

C. Metre

D. Dioptre

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Correct Answer: Option D

Explanation:
Dioptre (D) = m⁻¹. Power = 1/f in metres. Convex positive, concave negative. Optometry uses dioptre.

This question belongs to: Science Physics

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