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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 inmeasuring `u and v`. Then relative error in `f` is

A

`(p)/(2)((1)/(u)+(1)/(v))`

B

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

C

`(p)/(2)((1)/(u)-(1)/(v))`

D

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

Text Solution

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The correct Answer is:
B
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