Assertion : In the equation momentum, $P = \frac{{mass}}{{area}}x,$ the dimensional formula of $x$ is $L{T^{ - 2}}.$ Reason : Quantities with different dimensions can be multiplied.

Assertion is correct, reason is correct; reason is a correct explanation for assertion

Assertion is correct, reason is correct; reason is not a correct explanation for assertion

Assertion is correct, reason is incorrect

JEE PHYSICS MCQ: UNITS & MEASUREMENTS

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Analyzing +4 | -1

Assertion : In the equation momentum,

P = \frac{{mass}}{{area}}x,

the dimensional formula of

x

L{T^{ - 2}}.

Reason : Quantities with different dimensions can be multiplied.

View answer and explanation

Correct option: D

Assertion is incorrect, reason is correct

Option D is correct. The assertion is incorrect because the dimensional formula of x is

L^3T^{-1}

, and the reason is correct because quantities with different dimensions can be multiplied.

Practice All Chapter MCQs →

\sqrt{\frac{\text { Modulus of elasticity }}{\text { Density }}}

\mathrm{ms}^{-1} \text {. }

\frac{1}{\left(\sqrt{\varepsilon_0 \mu_0}\right) t} \text {. }

\left[ {{\mathrm{M}^{ - 1}}{\mathrm{L}^{ - 3}}{\mathrm{A}^2}{T^3}} \right]

{\varepsilon _0}L\frac{{\Delta V}}{{\Delta t}},\;

{\varepsilon _0}

{\Delta V}

{\Delta t}