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An eye specialist prescribes spectacles ...

An eye specialist prescribes spectacles having combination of convex lens of focal length 40cm in contact with a concave lens of focal length 25cm. The power of this lens combination in diopters is

A

`+1.5`

B

`-1.5`

C

` +6.67 `

D

`-6.67`

Text Solution

Verified by Experts

The correct Answer is:
B
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