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Physics-Temperature & Heat

NEET Physics Temperature & Heat MCQ Question

Type: MCQ-diagram based-Hard-Class 11

Consider a diagram where a thermometer is immersed in warm water, and the mercury level is shown rising. What is the primary reason for the rise in mercury level in the thermometer?

Question diagram
A

Mercury expands more than glass with temperature.

B

Glass contracts, causing the mercury to rise.

C

Mercury remains constant in volume, but pressure increases.

D

Air pressure on mercury decreases, causing it to rise.

Correct Answer

Option A

Detailed Explanation

Mercury in a thermometer rises when placed in warm water because it expands more than the glass for the same rise in temperature, as noted in the NCERT context.

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