Question

A lens produce a magnification of 0.5 is converging and diverging lens ? if the focal length of of lens of lens 6 cm. draw ray diagram showing the image formation in this case . A studennts uses A. lens of foocal length 40 cm and another of 20 cm write the nature of power of lens​

Answer 1

Answer:

m =+ 0.5

so, it's converging lens. As the sign is +

f= 6cm

The image formation of the lens is given above.

A student

P = 100 /f

= 100 / 40

= 2.5D

nature of lens is convex.

Another student

P = 100 / f

= 100 / 20

= 5D

nature of lens is convex.

Hope this helps you.

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