Question

An object has a Magnification value of 2 and it is placed at a distance of 20 cm from a

Convex Mirror. Calculate the image distance and the focal length of the mirror​

Answer 1

Answer:

m=2

u = -20cm

m = -v/u

2 = -v/-20

2× -20 = -v

-40 = -v

v =40

1/f = 1/v +1/u

     = 1/40 +1/-20

     =1/40 -1/20

     = 1/40-2/40

1/f  =  -1/40

f= -40 cm

I hope this is the answer

Answer 2

Answer:

f=40

Explanation:

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