Question

On placing an objects at a distance of 40cm. in front of a
concave mirror the image is found to be formed at a
distance of 10cm. Find the radius of curvature of the​

Answer 1

Answer:

u = -40 cm

v= - 10 cm

f= ?

1/v + 1/u = 1/f

1/f = 1/-10 + 1/-40

= 1/-10 - 1/40

= -4 -1/40

= -5/40

f=. 40/-5

f = -8 cm

R = 2f

R = 2(-8)

R = -16 cm

Explanation:

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