Q3 of 35 Page 9

Choose the correct statement(s):

The statement D is wrong because a derived quantity can exist ] which is dimensionless for example fine structure constant which is given by


where e: the electric charge


c: the speed of light


h: plank's constant


α: derived quantity and its dimensionless

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1

The dimensions ML-1 T-2 may correspond to

 2

Choose the correct statement(s):

 1

Find the dimensions of

A. linear momentum,


B. frequency and


C. pressure


 2

Find the dimensions of

A. angular speed ω,


B. angular acceleration α,


C. torque Γ and


D. moment of inertia I.


Some of the equations involving these quantities are


and


The symbols have standard meanings.