Question

what will be the distance between the principal focus and the centre of curvature of convex lens having radius of curvature equal to 50 cm

1. 20
2. 25
3. 50
4. 100​

Answer 1

Answer:

100

Explanation:

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Answer 2

Answer:

25cm

Explanation:

In a convex lens, R = 2f where R is the Radius of Curvature, f = focal length (length between the principal focus and Origin)

R is given as 50 cm which implies, f = R ÷ 2 => 50 ÷ 2 = 25.