A concave lens has focal length 30cm. At what distance should the obje

1.	A concave lens has focal length 30cm. At what distance should the object be placed from the lensso that it forms and image at 20cm from the lens. Also find magnification produced by thelens.
Answer» ANSWER: u = 60 m = 1/3 Explanation: LENS formula = 1/f = 1/u + 1/v 1/u = I/f - 1/v 1/u = 1/30 - 1/20 1/u = 20-30/600 1/u = 10/600 u = 60 m = v/u = 20/60 = 1/3 *Hope* it *helps* u

A concave lens has focal length 30cm. At what distance should the object be placed from the lensso that it forms and image at 20cm from the lens. Also find magnification produced by thelens.

Answer»

ANSWER:

u = 60

m = 1/3

Explanation:

LENS formula = 1/f = 1/u + 1/v

1/u = I/f - 1/v

1/u = 1/30 - 1/20

1/u = 20-30/600

1/u = 10/600

u = 60

m = v/u

= 20/60 = 1/3

Hope it helps u

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A concave lens has focal length 30cm. At what distance should the object be placed from the lensso that it forms and image at 20cm from the lens. Also find magnification produced by thelens.​

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A concave lens has focal length 30cm. At what distance should the object be placed from the lensso that it forms and image at 20cm from the lens. Also find magnification produced by thelens.