Question

equivalent focal length of two lenses in contact having power -15 day and positive +5D will be

Answer 1

P = 1/f

5 = 1/f

f = 1/5

f = 0.2

PLZ mark me BRAINLIEST

Answer 2

In order to find out the local length and nature of lend, you need to apply formula and assign the value such p=1/f, here the p=5, F = 1/5, f= 0.2.

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