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A pendulum beating seconds at one place ...

A pendulum beating seconds at one place `(g=985cm//sec^(2))` is taken ot another place `(g=981cm //sec^(2))`. If it is to beat seconds at another place, its length is to decreases by

A

`0.1cm`

B

`0.2cm`

C

`0.4cm`

D

`0.5cm`

Text Solution

Verified by Experts

The correct Answer is:
C
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