Question

Which of the following physical quantity is a derived quantity?

• A. Area
• B. Mass
• C. Time
• D. Temperature

Answer 1

The correct option is A

Area

Explanation for correct option

(A) - Area

1. $area=length\times breadth$
2. Its unit is derived from the unit of length.
3. So it is a derived quantity.

Explanation for incorrect option

Option B

1. Mass is the quantity of matter contained in an object.
2. It does not depend on any other quantity so it is not a derived quantity.
3. Its unit is $kg$

Option C

1. Time is also not a derived quantity.
2. It does not depend on any other physical quantity.
3. Its unit is $s$

Option D

1. Temperature is the measure of hotness or coldness of a body.
2. It does not depend on any other physical quantity.
3. Its unit is kelvin(K)

Hence option (A) is correct