WBJEE 2021 Math Solved Paper
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CATEGORY - I (Q:1 to Q50)
Carry 1 mark each and only one option is correct. In case of incorrect answer or any combination of more than one answer, ¼ mark will be deducted.
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Question : 5 of 75
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A bulb is placed at the centre of a circular track of radius 10 m. A vertical wall is erected touching the track at a point P. A man is running along the track with a speed of 10m/sec. Starting from P the speed with which his shadow is running along the wall when he is at an angular distance of 60° from P is
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