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(Ii) the Power of a Lens is +2.0 D. Find Its Focal Length and State What Kind of Lens It Is. - Physics

Numerical
One Line Answer
The power of a lens is +2.0 D. Find its focal length and state what kind of lens it is.
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Solution

Focal length (in metres) = `1/"power(in dioptres)"`

Focal length (in metres) = `1/2` = 0.5m = 50 cm

Since, the focal length is positive, the lens is aconvex lens.

Concept: Concept Refraction of Light Through a Lense
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APPEARS IN

Frank ICSE Class 10 Physics Part 2
Chapter 2 Light
Exercise 2.2 | Q 2.2 | Page 103
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