Science, asked by devimahesh6477, 3 days ago

if a lens can converge the sun rays at a point of 20 cm. away from its optical center, the power of this lens is _

Answers

Answered by samiransamantroy006

0

Answer:

distance of sun is infinity so the image is formed at focus

∴ Focal length= 20cm

Power = 1/ focal length

=1/20

= 0.05 D

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