Question

A rectangular acrylic plane mirror is
bent in such way that it acts as a
concave mirror. Without changing
its length and Breadth, can we change its focal length? Guess and write.​

Answer 1

Answer:

the rectangular size

is infinite

so the mirror withoue sorry i do not understand question

Answer 2

Answer:

The focal point is a point which lie in focus to axis of principal.

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