NEET UG PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

1 Easy

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Application +4 | -1

A brass scale of barometer gives correct reading at

{2^ \circ }C

the coefficient of linear expansion for brass is

0.00001{\,^ \circ }{C^{ - 1}}

. The barometer reads 75cm at

{27^ \circ }C

. The atmospheric pressure at

{2^ \circ }C

View answer and explanation

Correct option: C

74.96 cm

Option C (74.96 cm) is correct because it accounts for the thermal expansion of the brass scale in the barometer.

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