Heat is a form of MCQ with Answer and Explanation

Heat is a form of
A. Power
B. Energy
C. Pressure
D. Temperature
Answer: Option B
Solution (By JKSSB Mock Tests)
Heat is energy transferred due to temperature difference.

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Practice More Physics Questions

Question #1
A piece of copper wire has resistance 10 Ω at 0°C. α = 0.004/°C. At 100°C resistance is
A. 12 Ω
B. 8 Ω
C. 14 Ω
D. 10 Ω

Correct Answer: Option C


Explanation:
R_t = R₀(1+α t) = 10(1+0.004×100) = 10(1.4) = 14 Ω.

This question belongs to: Science Physics
Question #2
A capillary tube is dipped in water and the water rises to a height 'h'. If the experiment is performed in a freely falling elevator, the water column in the tube will:
A. Rise to height h
B. Not rise at all
C. Rise to height 2h
D. Rise to the full length of the capillary tube

Correct Answer: Option D


Explanation:
The height of capillary rise is given by Jurin's law: h = 2Tcos(theta) / (rrhog). In a freely falling elevator, the effective acceleration due to gravity (g') is zero (weightlessness). As effective g approaches zero, the theoretical height h approaches infinity. In reality, the water will rise to the very top of the tube, regardless of its length, but will not overflow.

This question belongs to: Science Physics
Question #3
The gravitational force between two bodies does not depend on
A. Universal constant G
B. Their masses
C. Presence of other bodies
D. Distance between them

Correct Answer: Option C


Explanation:
Gravitational force independent of intervening medium and other bodies (principle of superposition).

This question belongs to: Science Physics