Question

what is the focal length of the mirror.?​

Answer 1

Answer:

8 cm

Explanation:

mirror formula=1/f=1/v+1/U

image distance(v)=40cm

object distance(U)=10cm

focal length (f)=?????

1/f=1/v+1/u

1/10+1/40

4+1/40

5/40

1/8

1/f=1/8

f=8 cm

Answer 2

Answer:

here is your answer

Explanation:

the the focal length of the mirror is 8 cm