JEE PHYSICS MCQ: UNITS & MEASUREMENTS

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Understanding +4 | -1

Assertion:

\mu \mathrm{N}

is not the same as

\mathrm{nm}

.
Reason:

1 \mu \mathrm{N}=10^{-6} \mathrm{~N}

and

1 \mathrm{~nm}=10^{-9} \mathrm{~m}

View answer and explanation

Correct option: A

If both assertion and reason are true and reason is the correct explanation of assertion

Option A is correct because

\mu N

represents micronewtons (

10^{-6}

N) and nm represents nanometers (

10^{-9}

m), which are different physical quantities with different units.

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