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Pls define power of a lens …

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Pls define power of a lens in simple words and refractive index of media

Posted by Rajan Singh 5 years, 2 months ago

CBSE > Class 10 > Science

4 answers

Basamma.S. Naganagoudra Naganagoudra 5 years, 2 months ago

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Abdul Qhadir Azhari Azhari 5 years, 2 months ago

Thanks sir

Rajan Singh 5 years, 2 months ago

Thanx bhai

Gaurav Seth 5 years, 2 months ago

Power of a lens

Power of a lens is the ability to converge or diverge the ray of light falling on it.

Power of a lens is defined as reciprocal of focal length of the lens.

1

P=—–

f

A lens of small focal length has large power of converging or diverging a parallel beam of light.

Unit of power is Diopter (D)

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