JEE PHYSICS MCQ: UNITS & MEASUREMENTS

1 Hard

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Analyzing +4 | -1

The mass of the liquid flowing per second per unit area of cross-section of the tube is proportional to (pressure difference across the ends)

^n

and (average velocity

^m

of the liquid. Which one of the following relation is correct?

View answer and explanation

Correct option: B

m=-n

Option B (

m=-n

) is correct because dimensional analysis shows that the exponents must be equal in magnitude but opposite in sign.

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