Question

i) When an object is kept at 6 cm in front of a concave mirror, its image is obtained at 24 cm behind the mirror. Find the focal length and radius of curvature of the mirror.​

Answer 1

$\huge{ \mathtt{\green{heyya \: mate}}}$

Given that:u=(-6)cm

v=(+24)cm,

According to mirror formula:

1/f=1/u + 1/v

1/f=1/(-6) + 1/24

1/f=-1/6 + 1/24

1/f=-24+6/144

therefore,f=144/(-18)

f=(-8)cm

radius = 2×(-8)=-16cm

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