Q.

The dimensional formula for Reynold's number is [MHT CET 2014]

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a

[L-1MT]

b

[LMT]

c

[L0M0T0]

d

[LMT-1]

answer is A.

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Detailed Solution

Reynold's number describes the ratio of inertial force per unit area to viscous force per unit area for a flowing fluid. Thus, Reynold's number is the ratio of two physical quantity of same dimension which cancel out each other. Hence, Reynold's number is dimensionless [M0L0T0] quantity.

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The dimensional formula for Reynold's number is [MHT CET 2014]