Science, asked by komu123, 1 year ago

( fill in the blanks ) The focal length of lens with power 2.5 is ........................

Answers

Answered by Spiderboy

0

2.5 = 1/focal length. Which gives focal length = 1/2.5. Therefore the answer must be 0.4m or 40cm. And it is a convex lens
hope it helps you

Answered by therock014

0

40 cm..............................................
..............

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