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JEE Mains Model Paper 5

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Question : 2

Total: 90

The tube AC forms a quarter circle in a vertical plane. The ball B has an area of cross section slightly smaller than that of the tube, and can move without friction through it. B is placed at A and displaced slightly. It will

always be in contact with inner wall of the tube
always be in contact with the outer wall of the tube
initially be in contact with the inner wall and later with the outer wall
initially be in contact with outer wall and later with inner wall

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