Question

Observe the figure
a. Find the focal length of the mirror.
b. Find the magnification of image formed
c. Calculate the radius of curvature of the mirror.

Answer 1

Explanation:

formula : 1/f=1/v+1/u

1/f =(1/20)+(1/60)=(3+1)/60=4/60=1/15

1/f=1/15 i,e f= 15cm

a.focal length of mirror =15 cm

c. R=CF+FP=20+15=35 cm

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