Question

A thin lens has more focal length then its power will be​

Answer 1

Answer:

Thick lens will have shorter and consequently thin lens will have greater focal length. Because, For a thick lens, the optical path length of the light is more, than for a thin lens, thus, the bending of light will be more in case of a thicker lens. Consequently, it has a shorter focal length.

Answer 2

A thin lens has more focal length then its power will be​ less power.

• A thin lens have less power with more focal length and less curvature.
• While a narrow convex lens has a lesser curvature or a greater focal length, a thick convex lens has a greater curvature.
• We are aware that a lens's power is inversely related to its focal length.
• The lens with a shorter focal length will therefore have more power or greater refraction (causes more bending of light rays).
• A larger focal length lens will have less power or refraction than a shorter one (causes less bending of light rays).

Therefore, because it has a longer focal length, a thin lens has less power.

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