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In a compensated pendulum, two rods of d...

In a compensated pendulum, two rods of different metals are used with their lengths in ratio of 2 : 3. The coefficients of linear expansions for metals in the ratio is

A

`1:01`

B

`2:3`

C

`3:2`

D

`9:4`

Text Solution

Verified by Experts

The correct Answer is:
C
For c compensated pendulum,
`alpha_(1) l_(1) = alpha_(2)l_(2)`
`therefore alpha_(1)/alpha_(2) = 3/2 = 3:2`
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