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Field of View of Mirrors and Nature of Images

Question 4A s...

Question

Question 4
A spherical mirror and a thin spherical lens have each a focal length of -15 cm. The mirror and the lens are likely to be

(a) both concave
(b) both convex
(c) the mirror is concave and the lens is convex
(d) the mirror is convex, but the lens is concave

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Solution

(a) both concave

By convention, the focal length of a concave mirror and a concave lens are taken as negative. Hence, both the spherical mirror and the thin spherical lens are concave in nature.

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Q. Question 4
A spherical mirror and a thin spherical lens have each a focal length of -15 cm. The mirror and the lens are likely to be

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(b) both convex
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A spherical mirror and a thin spherical lens have each a focal length of −15 cm. The mirror and the lens are likely to be

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Q. The magnification produced by a spherical lens and a spherical mirror is + 2.0.
(a) The lens and mirror are both concave
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Question 7

You are provided with a convex mirror, a concave mirror, a convex lens and a concave lens. You can get an inverted image from

(a) both concave lens and convex lens.

(b) both concave mirror and convex mirror.

(c) both concave mirror and convex lens.

(d) Both convex mirror and concave lens.

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Field of View of Mirrors and Nature of Images

Standard X Physics

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