Two identical glass `(mu_(g)=3//2)` equi- convex lenses of focal length f each are kept in contact. The space between the two lenses is also filled with water `(mu_(g)=4//3).` The focal length of the combination isA. f/3B. fC. `(4f)/(3)`D. `(3f)/(4)`

Two identical glass `(mu_(g)=3//2)` equi- convex lenses of focal lengt

1.	Two identical glass `(mu_(g)=3//2)` equi- convex lenses of focal length f each are kept in contact. The space between the two lenses is also filled with water `(mu_(g)=4//3).` The focal length of the combination isA. f/3B. fC. `(4f)/(3)`D. `(3f)/(4)`
Answer» Correct Answer - D Using combination of lenses, we get The focal length of the combination `rArr f_("eq")=(3f)/(4)`

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Two identical glass `(mu_(g)=3//2)` equi- convex lenses of focal length f each are kept in contact. The space between the two lenses is also filled with water `(mu_(g)=4//3).` The focal length of the combination isA. f/3B. fC. `(4f)/(3)`D. `(3f)/(4)`

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