Question

why does focal length increases when we place a lens of refractive index mu g in a medium of refractive index Mu m where mu g is greater than mu m​

Answer 1

Answer:

Firstly i assume that the lens material is glass! Always remember ... What are some simple steps I can take to protect my privacy online? ... Now, the focal length will change. The lens ...

Explanation:

Sorry but I didn't remember the complete answer.

Answer 2

Answer:

The focal length of a lens increases when we place a lens of refractive index Πg in a medium of Π m and Πg>Πm.

The REASON is that focal length of a lens is inversely proportional to the refractive index.

Explanation:

The focal length is greater in a medium having less refractive index while the focal length is lesser in a medium having greater refractive index.

You can clearly get to know this fact when you place a lens in water.

Hope it is clear.

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