v34

A

`5` cm

B

`10` cm

C

`55` cm

D

`0.2` cm

Text Solution

Verified by Experts

The correct Answer is:
A
Given, `(6)/(5)=((1+(D)/(f)))/(D//f)` or `(6)/(5)=((f)/(D)+1)`
or `(f)/(D)=(6)/(5)-1=(1)/(5)` or `f=(D)/(5)=5` cm
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