1.

The time T of oscillation of a simple pendulum of length L is governed by T=2pisqrt(L/g), where g is a constant. The percentage by which the length be changed in order to correct an error of loss equal to 2 minutes of time per day is

Answer»

`-5/18`
`-2/9`
`1/6`
`1/9`

ANSWER :A


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