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) beyond the centre of curvature
(d) at infinity

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Solution

(b) at the centre of curvature

If a magnification of −1 (minus one) is to be obtained by using a converging mirror, the object needs to be placed at the centre of curvature so that an image of same size as the object can be formed.

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(c) at the centre of curvature
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Q. A concave mirror produces magnification of +4. The object is placed:

(a) at the focus
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(c) between focus and pole
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(d) at infinity

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(d) beyond 2F

Q. If a magnification of, –1 is to be obtained by using a converging lens of focal length 12 cm, then the object must be placed:
(a) within 12 cm
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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) beyond the centre of curvature (d) at infinity

(b) at the centre of curvature If a magnification of −1 (minus one) is to be obtained by using a converging mirror, the object needs to be placed at the centre of curvature so that an image of same size as the object can be formed.

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) beyond the centre of curvature
(d) at infinity

(b) at the centre of curvature

If a magnification of −1 (minus one) is to be obtained by using a converging mirror, the object needs to be placed at the centre of curvature so that an image of same size as the object can be formed.