Science, asked by 8102211334a, 8 months ago

Calculate the focal length of a lens, if its power is - 2-5 D.
OR

Answers

Answered by Legend42

3

Explanation:

ملک اور بیرون ملک نافذ کرنے والے ممالک کے لئے یہ استعمال کرنے کے لئے آزاد اور

Answered by Dhanyatha

0

Explanation:

we know that power P=2.5D

P=

f

1

f=

2.5

1

=0.4m=40cm

Since the focal length of lens is positive so it is a convex lens. It is a converging lens.

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