A rectangular arcylic plane mirror is bent in
such way that it acts as a concave mirror with
out changing its length and breadth can we
change its focal length? guess and write
answer more i will mark as brainlist
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ƒσcαℓ ℓεɳɠƭɦ
The distance between the centre of a lens or curved mirror and its focus.
αиѕωєя
No, we cannot change the focal length of a concave mirror, it is oy in the case of convex lens when placed in water.
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