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An object is situated at a distance off/...

An object is situated at a distance of`f//2`from a convex lens of focal length`f`Distance of image will be-

A

`+(f//2)`

B

`+(f//3)`

C

`+(f//4)`

D

`-f`

Text Solution

Verified by Experts

For a spherical lens
`(1)/(v)-(1)/(u)=(1)/(f)`
for concave lens,`u=-(f)/(2)`and`f` is `+ve`
`:.(1)/(v)=(1)/(f)+(1)/(u)=+(1)/(f)-(2)/(f)=-(1)/(f)`
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