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The focal length of a mirror is given by...

The focal length of a mirror is given by `1/v-1/u=2/f`. If equal errors `alpha` are made in measuring u and v. Then relative error in f Is

A

`2/alpha`

B

`alpha(1/u+1/v)`

C

`alpha(1/u-1/v)`

D

`3/alpha`

Text Solution

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The correct Answer is:
B
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