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  • Which of the following is not a pair of fundamental quantitiesOption: 1 Time and massOption: 2

Which of the following is not a pair of fundamental quantities

Option: 1

Time and mass


Option: 2

Length and time 


Option: 3

Electric current and Luminous Intensity 


Option: 4

Electric current and electric field 


Answers (1)

best_answer

As we learnt in

Fundamental and Derived Quantities -

1) Fundamental Quantities

Those physical quantities are independent of all other quantities and cannot be expressed in terms of other basic quantities.

These quantities are also called absolute /basic quantities.

Length, mass, time, electric current, temperature, amount of substance and luminous intensity

2) Derived Quantities

Derived Quantities are products and ratios of the fundamental quantities that exist in a system of units and these quantities can be expressed in terms of other basic quantities.

i.e. Area, Density, Force, Pressure, etc

So l= length of the square is a fundamental quantity

But the area of square=A=l2 is a derived Quantity that we get with the help of taking a square of the length.

The electric field is not a fundamental quantity.

The correct option is 4

Posted by

shivangi.shekhar

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