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The SI unit of a physical quantity is pascal-second. The dimensional formula of this quantity will be

Asked in JEE Main 27th June 2nd Shift 2022 · Dimensional formula of a named quantity

Answer: (1) [ML⁻¹T⁻¹]

Step-by-step solution

Idea: a pascal is [ML⁻¹T⁻²] and multiplying by a second adds one power of time.

[ML⁻¹T⁻²][T]=[ML⁻¹T⁻¹].

That is the dimension of the coefficient of viscosity, whose SI unit is indeed the pascal-second.

Why the other options are wrong

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