Physics, asked by game20601, 11 months ago

Two lenses of power -15 d and +5d are in contact what is the focal length

Answers

Answered by dhritis567

2

Total power of the combination.= P1 + P2

5 - 15

- 10 D

Now we know that focal length is inverse of power

f = 1/P

f = - 0.1 m or 10 cm

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