Question

A concave mirror of radius of curvature 4m is used for rear view in an automobile a person appears to be at 1m behind what is the actual distance of a person

Answer 1

Answer:

f = -2m

v= 1m

u=?

mirror formula

1/v + 1/u = 1/f

1/u = 1/f - 1/v

= 1/-2 - 1

= -1/2 -1

-3/2

u. = 2/-3

= -0.6

therefore the actual distance of a person is -0.6 m

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