Physics, asked by geetha5684, 4 months ago

6. Power of a lens is -4D, then its focal length is
a) 4m
b) -40m
c) -0.25 m
d) -2.5 m

Answers

Answered by nimmy1973shanth

1

Answer:

option c -0.25

Explanation:

1/-4= -0.25m

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