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JEE Main 20248 AprilMorning Shift

Exam: JEE Main
Year: 2024
Date: 8 April
Shift: Morning Shift
Subject: Physics
Chapter: Mathematics in Physics

JEE Main 2024 · 8 April · Morning Shift · Physics · Mathematics in Physics

In an expression a × 10^ b ;

In an expression

a \times 10^{\mathrm{b}}

;

Options

A $b$ is order of magnitude for $a \geq 5$
B $b$ is order of magnitude for $a \leq 5$
C $a$ is order of magnitude for $b \leq 5$
D $b$ is order of magnitude for $5 < a \leq 10$

Correct answer

B. $b$ is order of magnitude for $a \leq 5$

Step-by-step solution

\begin{aligned} & a \times 10^b \\ & \text{ if } a \leq 5 \text{ order is } b \\ & a>5 \text{ order is } b+1\end{aligned}

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