Question

An Object is located at a distance of 20cm from a concave mirror of radius of curvature 30cm. Find The separation between the object and its image ?​

Answer 1

Answer:

Explanation:

Concave mirror

U=20cm F=30cm

1/f=1/u+1/v

1/-30=1/-20 +1/v

1/v= 1/60

V=60

V-U=40

Answer 2

u=-20 cm

f=-15 cm

using 1/v+1/u=1/f

v=-60

so separation between image and object is 40 cm