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In a concave mirrorr experiment, an obje...

In a concave mirrorr experiment, an object is placed at a distance `x_(1)` from the focus and the image is formed at a distance `x_(2)` from the focus. The focus length of the mirrorr would be

A

`x_(1) x_(2)`

B

`sqrt(x_(1)x_(2))`

C

`sqrt(x_(1)//x_(2))`

D

`(x_(1) + x_(2))/(2 )`

Text Solution

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The correct Answer is:
B
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