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In searle's apparatus we have two wires....

In searle's apparatus we have two wires. During experiment we study the extension in one wire the use of second wire is

A

to support the apparatus because it is heavy and may not break sigle wire

B

to compensate the changes in length caused by changes in temperature of atmosphere during experimentation

C

to keep the apparatus in level so that extension is measured accurately

D

all the three above

Text Solution

Verified by Experts

The correct Answer is:
B
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