Question

a point objective is placed at a distance of 20 cm from a convex mirror of focal length 20 the image will formed at​

Answer 1

Answer:

1/10

Explanation:

u= -20

f= 20

v=?

the mirror formula:

1/f= 1/u +1/v

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

1/20 - ( -1/20) = 1/v

1/20 + 1/20 = 1/v

1+1/20 = 1/ v

2/20= 1/v

1/10= 1/v

so v= 10