Physics, asked by maina473, 9 months ago

58. A concave lens of focal length 25 cm will have its power :
(a) +4D (b) -4D (c) +0.4D (d) -0.4D

Answers

Answered by Anonymous

1

here is ur answer ....

hope it help u dear ❤

-4D is the correct answer ..

Attachments:

Answered by MaryRosette

1

Answer:

a. +4D

Explanation:

power = 1/f (in metres)

= 1/0.25

=+4D

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