MCQ
Which of the following is dimensionally correct
  • A
    Pressure = Energy per unit area
  • Pressure = Energy per unit volume
  • C
    Pressure = Force per unit volume
  • D
    Pressure = Momentum per unit volume per unit time

Answer

Correct option: B.
Pressure = Energy per unit volume
b
(b) Pressure = $\frac{{{\rm{Force }}}}{{{\rm{Area}}}} = \frac{{{\rm{Energy}}}}{{{\rm{Volume}}}}$= $M{L^{ - 1}}{T^{ - 2}}$

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Match List$-I$ with List$-II$

List$-I$ List$-II$
$A$ Gauss's Law in Electrostat ics $I$ $\oint \vec{E} \cdot d \vec{l}=-\frac{d \phi_B}{d t}$
$B$ Faraday's Law $II$ $\oint \overrightarrow{ B } \cdot d \overrightarrow{ A }=0$
$C$ Gauss's Law in Magnetism $III$ $\oint \vec{B} \cdot d \vec{l}=\mu_0 i_C+\mu_0 \in_0 \frac{d \phi_E}{d t}$
$D$ Ampere-Maxwell Law $IV$ $\oint \overrightarrow{ E } \cdot d \overrightarrow{ s }=\frac{ q }{\in_0}$

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