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JEE PHYSICS MCQ: RAY OPTICS

1 Medium

1 of 1

Understanding +4 | -1

First and second focal lengths of spherical surface of

n

refractive index are

f_1

and

f_2

respectively. The relation between them, is

View answer and explanation

Correct option: B

f_2= -f_1

Option B is correct because the first and second focal lengths of a spherical surface have equal magnitudes but opposite signs.

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