Which has more power : a thick convex lens or a thin convex lens, made of the same glass? Give reason for your choice.

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Solution

A thick convex lens has more power than a thin one because it has greater curvature or lesser focal length than a thin lens.

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Similar questions

Which lens has more power : a thick lens or a thin lens ?

Draw ray diagrams to represent the nature, position and relative size of the image formed by a convex lens for the object placed : (a) at $2 F_{1}$ , (b) between $F_{1}$ and the optical centre O of the lens. Which of the above two cases shows the use of the convex lens as a magnifying glass ? Give reasons for your choice.

Q. Assertion :Power of a glass convex lens in air is

+ 6 D

, then power of the same convex lens in water will be

+ 2 D

Reason:

P = (\frac{μ_{l}}{μ_{m}} - 1) (\frac{1}{R_{1}} - \frac{1}{R_{2}})

Q. The focal length of a thin convex lens is _____ than that of a thick convex lens.

Q. A double convex lens has power

P

and same radii of curvature

R

of both the surfaces. The radius of curvature of a surface of a plano - convex lens made of the same material with power

1.5 P

is :

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