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Concepts Of Physics MCQ Edition [Volume 1]

Exam: Concepts Of Physics MCQ Edition [Volume 1]
Subject: Physics
Chapter: Introduction to Physics

Concepts Of Physics MCQ Edition [Volume 1] · Physics · Introduction to Physics

When a physical quantity is measured, the result is expressed as nu...

When a physical quantity is measured, the result is expressed as

nu

, where

u

represents the unit used and

n

is the numerical value. If the result is expressed using various units, then

Options

A $n \propto \sqrt{u}$
B $n \propto u$
C $n \propto u^2$
D $n \propto \dfrac{1}{u}$

Correct answer

D. $n \propto \dfrac{1}{u}$

Step-by-step solution

The magnitude of a physical quantity remains constant regardless of the system of units used for its measurement.

Q = nu = \text{constant}

n = \dfrac{\text{constant}}{u}

n \propto \dfrac{1}{u}

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