Question

A concave mirror produce three times enlarged virtual image of an object placed at 10 cm in front of it calculate the rafius of curvature of the mirror

Answer 1

hope this is correct

Answer 2

Answer:

u=-10, R=?

m=-v/u

3=-v, /-10

Now we use,

1/v+1/u=1/f

1/30+1/10=1/f

-1+3/30=1/f

4/30=1/f

4f=30

f=30/4

=6

R=2f

r=2×6

=12cm Ans