JEE PHYSICS MCQ: UNITS & MEASUREMENTS

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Understanding +4 | -1

Velocity of sound in a gas is given by

v=\sqrt{\frac{\gamma p}{\rho}}

. Dimensional formula for

\gamma

View answer and explanation

Correct option: B

\left[\mathrm{M}^0 \mathrm{~L}^0 \mathrm{~T}^0\right]

Option B ([M⁰ L⁰ T⁰]) is correct because γ is a dimensionless quantity, being the ratio of two specific heats.

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