Q. If , where is in metre. Then,

Physical World, Units and Measurements Report Error

A

the dimensions of is

B

the unit of is radian

C

the dimensions of are same as those of

D

the unit of is metre

Solution:

(1) Here, is dimensionless.
(2) Let

Here, should be in radian.
So, the unit of is radian.
(3) Dimensions of Dimensions of Dimensionless.
Dimension of Dimensions of .

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