Fundamental Quantities And Units

FUNDAMENTAL QUANTITIES AND UNIT.

Q1.WHAT IS FUNDAMENTAL QUANTITIES?

Ans:The physical quantities which do not depend on any other physical quantities for their measurements are known as FUNDAMENTAL QUANTITIES.

Q2.THERE ARE HOW MANY FUNDAMENTAL QUANTITIES?

Ans:There are seven fundamental quantities.

1.LENGTH:SI unit is 'meter' symbol is 'm'.

2.MASS: SI unit is 'kilogram' and symbol is 'kg'.

3.TIME:SI unit is 'second' symbol is 'sec'.

4.TEMPERATURE:SI unit is 'kelvin' symbol is 'K'.

5.ELECTRIC CURRENT:SI unit is 'ampere' symbol is 'A'.

6.LUMINOUS INTENSITY:SI unit is 'candela' symbol is 'cd'.

7.AMOUNT OF SUBSTANCE:SI unit is 'mole' symbol is 'mol'.