Question

A toy car is placed 59.0 cm from a convex mirror. The image of the car is upright and one-third as large as the actual car. Calculate the mirror's power in diopters.

Answer 1

Solution)

Here,

Magnification, m=-1/3

V/u=-1/3

So, v=-u/3

From mirror equation,

1/f= 1/v+ 1/u

=1/(-u/3) +1/u

F= -u/2

Given, u= 59 cm

So, F=-59/2=-29.5 cm

Now, Power, P=1/f=1/-29.5*10^-2 m=-3.38 dioptres (Ans)

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