JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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Understanding +4 | -1

A steel tape gives correct measurement at

20^{\circ} \mathrm{C}

. A piece of wood is being measured with the steel tape at

0^\circ \mathrm{C}

. The reading is

25 \mathrm{~cm}

on the tape, the real length of the given piece of wood must be

View answer and explanation

Correct option: B

< 25 \mathrm{~cm}

Option B is correct because at a lower temperature, the steel tape will contract, leading to a larger reading than the actual length of the wood.

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