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Saksham Goyal
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Asked: 2021-12-01T06:41:58+00:00 In:

In order to determine the focal length of a concave mirror by obtaining the image of a distant object on screen, the position of the screen should be:

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Poll Results

83.33%[A] Parallel to the plane of concave mirror ( 5 voters )
16.67%[B] Perpendicular to the plane of concave mirror ( 1 voter )
0%[C] Inclined at an angle 60° to the plane of mirror
0%[D] In any direction with respect to the plane of concave mirror
Based On 6 Votes

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All the reflected light rays converge and pass through the focus (F) of a concave mirror. Since the focus of a concave mirror is in front of the mirror, the screen has to be placed parallel in front of the mirror.

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    1. [A] Parallel to the plane of concave mirror

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