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Shown an object and its image formed by ...

Shown an object and its image formed by a thin lens. Then the nature and focal length of lens is

A

`f=4.8cm,` converging lens

B

`f=4.8 cm,` diverging lens

C

`f=2.18 cm,` converging lens

D

`f=-2.18 cm,` diverging lens

Text Solution

Verified by Experts

The correct Answer is:
B
`(1)/(v)-(1)/(u)=(1)/(f)impliesv=-3cm,`
`u=-8cm. impliesf=(-24)/(5)=-4.8cm`
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