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The power of a lens is +2D. Calculate it's focal length . Is this lens convergent or divergent?

Posted by Raj Bajpai 5 years, 2 months ago

CBSE > Class 10 > Science

2 answers

Ayush Kashyap 5 years, 2 months ago

Since it's power is +ve , ,so from p=1/f ,we get f=+0.5 m ,hence it is co verging lens ,I.e convex lens because it f is +ve~?

0Thank You

Gaurav Seth 5 years, 2 months ago

Power of lens is = 2 D

To find :-

It's focal length.

Solution:-

Focal length → The distance between the optical center and focus of the lens is known as focal length.

Power :- The degree of convergence and divergence of a mirror is known as its focal length.

The relationship between power and focal length of mirror:-

Put the given value,

→

1Thank You

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