Physics, asked by yadavdresses4235, 18 days ago

What is the focal length of double concave lens kept in air with two spherical surfaces of radii R1 =30cm and R2 =60cm . Take refractive index of lens as n=1.5 .

Answers

Answered by praveenhallur2003

0

Answer:

-40 cm

Explanation:

I hope it's help ful

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