In an expression a × 1 0 b ;, b is order of magnitude for a ≥ 5, b is order of magnitude for a ≤ 5, a is order of magnitude for b ≤ 5, b is order of magnitude for 5 a ≤ 10

a × 1 0 b if a ≤ 5 order is b a > 5 order is b + 1

In an expression a × 1 0 b ;

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In an expression $a \times 10^{\mathrm{b}}$;

PhysicsMathematics in PhysicsJEE MainJEE Main 2024 (08 Apr Shift 1)

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2542 Upvotes Verified Answer

The correct answer is: $b$ is order of magnitude for $a \leq 5$

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

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