Question

6. Assertion (A): Though fermi is a unit of distance, it is not a fundamental unit. Reason (R): All practical units need not be fundamental. a) Both A and R are true and R is the correct explanation of A b) Both A and R are true but Ris not the correct explanation of A c) A is true but Ris false d) A is false but R is true​

Answer 1

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a) Both A and R are true and R is the correct explanation of A

EXPLANATION:-

• The fundamental unit of mass is kilogram. Milligram is not a fundamental unit.

• All practical units need not be fundamental units.

• They are derived for our practical easy.

• Therefore, both assertion and reason is correct. And reason is the correct explanation for assertion.

Answer 2

Both A and R are true and R is correct explaination of A

Explaination

as we know that Fermi. is unit of distance but not fundamental unit and All pratical unit need not be fundamental

both are true and also reason is correct.

So that is why A and R are true and R is correct explaination of A