Physics, asked by sonalisahoo4500, 7 months ago

Q15. How are power and focal length of a lens is related? You are provided with two lenses of focal length

20cm and 40cm respectively , which lens will you use to obtain more convergent light?

Answers

Answered by aayu2109

1

Answer:

power is reciprocal of focal length.i.eP=1/f

Explanation:

20cm=0.2m

P=1/f

=1/0.2

=5D

40cm=0.4m

P=1/f

=1/0.4

=2.5D

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