Question

iii) CD is an image of an object AB formed by an optical device X. Identify X.

(a) Concave lens
(c) Concave mirror
(3) Convex lens
(d) Convex mirror​

Answer 1

Answer:

concave lens

Explanation:

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Answer 2

CD is an image of an object AB formed by an optical device X is (3) Convex lens.

Explanation:

Convex lenses are used in eyeglasses to correct hyperopia where the distance between the eye's lens and the retina is too short to focus behind the retina. Glasses with convex lenses increase refraction and decrease the focal length accordingly.A convex lens with one side  is called a plano-convex lens. The human eye's lens  is a typical example of a convex lens. Another common example of a convex lens is a magnifying glass  used to correct hyperopia or hyperopia.

Examples of Convex Lens Uses in Daily Life

• Human Eye.
• Magnifying Glasses.
• Eyeglasses.
• Cameras.
• Telescopes.
• Microscopes.
• Projector.