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As shown below AB represents an infinite...

As shown below AB represents an infinite wall tangential to a horizontal semi-circular track. O is a point source of light on the ground at the center of the circle. A block moves along the circular track with a speed v starting from the point where the wall touches the circle. If the velocity and acceleration of shadow along the length of the wall is respectively v and a, then:

A

`V= vcos((vt)/(R))`

B

`V= vsec^(2)((vt)/(R))`

C

`a= ((v^(2))/(R))sec^(2)((vt)/(R))tan((vt)/(R))`

D

`a= ((2v^(2))/(R))sec^(2)((vt)/(R))tan((vt)/(R))`

Text Solution

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The correct Answer is:
B, D
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