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+1 vote
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in Optics by (48.5k points)
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An object 2 cm tall is placed 10 cm in front of a convex lens of focal length 15 cm. Find the position, size and nature of the image formed.

1 Answer

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Best answer

Focal length of a convex lens f = 15 × 10-2

Weight of the object ho = 2 × 10-2

Let weight of the image be hv

Distance of the object u = 10 × 10-2

Distance of the image v = 15 × 10-2

We know

∴ v = -30 × 10-2

Distance of the image = 30 × 10-2 m

Hence a virtual image 6 × 10-2 m height is formed at a 

distance of 30 × 10-2 m from the lens on the same side of the lens.

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