Is it true that using not so thick (thin) lenses for a telescope is advantageous?

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True

False

answer is A.

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Detailed Solution

The above statement is True.
A thick convex lens has more power than a thin convex lens because it has more curvature or a shorter focal length. A thick convex lens has more curvature or a shorter focal length than a thin convex lens, which has less curvature or a greater focal length.
We know that the focal length of the lens is inversely proportional to its power. As a result, a lens with a shorter focal length will have more power or have a higher refraction (causing more bending of light rays). A longer focal length lens will have less power or low refraction (causes less bending of light rays).
As a result, a thick convex lens has more power because it has a shorter focal length.

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