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Q.

If energy of a body moving along x-axis at time t andposition x isgivenby E=A−x2Bt,then the dimensions of A × B will be

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a

M−1L2T1

b

MLT−2

c

M−1L3T−2

d

ML−3T2

answer is A.

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Detailed Solution

A]=x2=L2  Also  [B]=x2(E)(t)=L2ML2T−2(T)=M−1T1 Hence [AB]=M−1L2T1
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