MEASUREMENT

QUESTIONS:

If F denotes force and t time, then in the equation F = at-1 + bt3, the dimensions of a and b respectively are:

  • LT-1 and LT -1
  • LT-1 and LT -5
  • MLT-5 and MLT -1
  • MLT-1 and MLT -5

CORRECT OPTION:

MLT-1 and MLT -5

EXPLANATION:

The dimensions of at-1 and bt3 have to be that of force which is MLT-2. Therefore the dimensions of a must be MLT-1 and the dimensions of b must be MLT-5.

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