A body takes time t to reach the bottom, when it slides on a smooth inclined plane of angle of inclination 45^\circ with the horizontal. If the plane is made rough, time taken now is 2 t. The coefficient of friction of the rough surface is

NEET 2022 Model Paper 6

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A body takes time t to reach the bottom, when it slides on a smooth inclined plane of angle of inclination 45° with the horizontal. If the plane is made rough, time taken now is 2t. The coefficient of friction of the rough surface is

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