SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which position of the object will produce a magnified virtual image, if a concave mirror of focal length 15 cm is being used?
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10 cm
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20 cm
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30 cm
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35 cm
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Explanation:
Detailed explanation-1: -In this case the focal length of the mirror is given 15 cm and the image is magnified and virtual . This can only be possible when the position of image is behind the mirror, and the position of object will be between focus and pole. Hence, the length at which object should be placed should be between 0 and 15 cm.
Detailed explanation-2: -When an object is placed at the focus or between the focus (F) and centre of curvature (C) of a concave mirror, the image produced is inverted, magnified and real.
Detailed explanation-3: -For a concave mirror of focal length 10 cm, magnification of a real image is 3.
There is 1 question to complete.