Does the focal length of lens changes in all medium
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Is it mirror or lens?
If mirror, the focal length is same in all mediums.
If lens, then it changes according to the medium for example if it is kept in a medium greater than its own refractive index then a converging lens behaves like a diverging lens and when a convex lens is kept in water then it appears that the focal length has increased.
Physically there is no change in focal length of a lens.
- note :--
No, The focal length is not same in all the mediums
☆ Focal length changes accordance to the medium
EX :- A lens changes it's focal length when kept in water from air
Here, Air and water are two mediums
if there is any doubt pls tell me
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