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When a biconvex lens of glass having ref...

When a biconvex lens of glass having refractive index `1.47` is dipped in a liquid, it acts as a plane sheet of glass. This implies that the liquid must have refractive index.

A

equal to the of glass

B

less than one

C

greater than that of glass

D

less than that of glass

Text Solution

Verified by Experts

The correct Answer is:
A
The less acts as a plane sheet of glass, when dipped in the liquid i.e. `f=oo or (1)/(f)=0`
But for the lens dipped in the liquid
`(1)/(f)=((mu_(g))/(mu_(L))-1)((1)/(R_(1))-(1)/(R_(2)))=0`
`therefore (mu_(g))/(mu_(L))-1=0 or mu_(g)=mu_(L)`
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