Question

1. Explain four types of units
2. Mention three applications of
dimensions

Answer 1

Answer:

1.They are meter (length), kilogram (mass), second (time), Ampere (current), Kelvin (temperature), candela (luminous intensity), mole (amount of substance). The supplementary units : radian (plane angle) and steradian (solid angle). There are many derived units.si,fps,MKS,cgs,emu,esu .

2.(1) To convert the physical quantity from one system to another. (2) To check the correctness of a physical relation. (3) To obtain relationship among various physical quantities involved. (4) To find dimensions of constant in a physical relation.