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Question

In the expression y=asin(ωt+θ), y is displacement and t is the time. Write the dimensions of ω.

A
[M0LT0]
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B
[M0L0T0]
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C
[M0L0T1]
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D
[M1L0T0]
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Solution

The correct option is C [M0L0T1]
Units for those quantities that cannot be derived from normal unit system are called supplementary quantities.
Angle is considered as a supplementary quantity.
Generally these quantities are considered as dimensionless quantities.

So ω will have the dimensions as [M0L0T0]/[M0L0T]=[T1]

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