Question:
Which one of the following materials cannot be used to make a lens?
Which one of the following materials cannot be used to make a lens?
Updated On: Nov 18, 2023
- Water
- Glass
- Plastic
- Clay
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The Correct Option is D
Solution and Explanation
A lens allows light to pass through it. Since clay does not show such property, it cannot be used to make a lens.
So, the correct option is (D): Clay
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Notes on Spherical Mirrors
Concepts Used:
Spherical Mirrors
A spherical mirror is a mirror which has been cut out of a spherical surface.
There are two kinds of spherical mirrors:
- Convex Mirror
- Concave Mirror
Concave Mirror
Concave mirrors are also called converging mirrors, because in these types of mirrors, light rays converge at a point after impact and reflect back from the reflective surface of the mirror.
Convex Mirror
The convex mirror has a reflective surface that is curved outward. Regardless of the distance between the subject and the mirrors, these mirrors are "always" virtual, upright and reduced.