If a magnification of, -1 (minus one) is to be obtained by using a converging mirror, then the object has to be placed:
(a) between pole and focus (b) at the centre of curvature
(c) beyind the centre of curvature (d) at infinity

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Solution

Answer : (b) at the centre of curvature

Explanation: magnification -1 means that image is inverted and have the same size. It is obtained when the object is at the centre of curvature.
Diagram:

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In order to obtain a magnification of −2 (minus 2) with a concave mirror, the object should be placed:
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(c) at the centre of curvature
(d) beyond the centre of curvature

Q. A concave mirror produces magnification of +4. The object is placed:

(a) at the focus
(b) between focus and centre of curvature
(c) between focus and pole
(d) beyond the centre of curvature

Q. If a magnification of, –1 (minus 1) is obtained by using a converging lens, then the object has to be placed:
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(b) at 2f
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If a magnification of, -1 (minus one) is to be obtained by using a converging mirror, then the object has to be placed: (a) between pole and focus (b) at the centre of curvature (c) beyind the centre of curvature (d) at infinity

Answer : (b) at the centre of curvature Explanation: magnification -1 means that image is inverted and have the same size. It is obtained when the object is at the centre of curvature. Diagram:

If a magnification of, -1 (minus one) is to be obtained by using a converging mirror, then the object has to be placed:
(a) between pole and focus (b) at the centre of curvature
(c) beyind the centre of curvature (d) at infinity

Answer : (b) at the centre of curvature

Explanation: magnification -1 means that image is inverted and have the same size. It is obtained when the object is at the centre of curvature.
Diagram: