If a lens and mirror are dipped in water how will it affect their respective focal lengths?
Asked by | 23rd Jan, 2009, 03:43: PM
The focal length of a mirror does not depend upon the nature of medium in which it is placed whereas the focal length of a lens does depend upon the nature of medium in which it is placed.
Thus, there will be no change in the focal length of the mirror but the focal length of the lens will change.
Answered by | 23rd Jan, 2009, 11:13: PM
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