Question

Spherical aberration can also be made minimum by using two ———— lenses. (a) convex (b) concave (c) piano-concave (d) piano-convex​

Answer 1

Answer:C

Explanation:...

Answer 2

Answer:

Option-D.Plano-convex is the correct answer.

A plano-convex lens creates images with the least amount of spherical aberration since the whole deviation is distributed across both sides.

What is a Plano convex lens?

• Positive focal length elements with one flat surface and one spherical surface are known as plano-convex lenses.
• These lenses are intended to be used in infinite conjugate (parallel light) applications or for straightforward imaging in unimportant situations.
• All-purpose focusing elements are perfect for these optical lenses.
• To focus light into a single point, a plano-convex lens is employed as an optical component.
• In the "plano" section, one side of the lens is described as being flat (a plane), while in the "convex" section, the other side is described as being bent outward.
• A plano-concave lens is one that has caved in or is bowed inward (a topic for another day).What is referred as as a positive focal length is produced by this outward bowing.
• A positive focal length indicates that the object is on the other side of the lens from the focal point, also known as the point where light converges.

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