Question

24. Name the physical quantity related to pascal.
25. Define kilogram.
26. Define micron and angstrom.
27. Name three different system of units.
28. Name the quantity whose unit is parsec.​

Answer 1

24) The physical quantity related to Pascal is Pressure . It is the SI unit of force and is equivalent to 1 newton force acting on a unit area .

25) Kilogram is the SI unit of mass and is a fundamental dimensional formula . It does not depend on any other quantity . It is denoted by kg .

26) Micron : Also called micro meter . 1 micron is equal to $10^{-6}$ times of 1 m . It is denoted by μ (mu) .

Angstrom : Also a unit of length , 1 argstrom is equal to $10 ^{-10}$ times 1 m . It is denoted by Å .

Both micron and Angstrom are used to calculate very small distance .

27. The three system of units are :

a) CGS system : Stands for Centimeter , Gram and second respectively as units for length , mass and time .

b) FPS system : Stands for Foot , Pound and second respectively as units for length , mass and time .

c) SI units : Stands for The International System of Units . It has units that are widely accepted all over the world .

28. Parsec is a unit of length and is used to calculate astronomical distances . 1 parsec is equal to 3.26 light years .

Answer 2

24. Pressure is the physical quantify related to Pascal.

25. Kilogram is the SI unit of mass. It is demoted by kg.1000g is equal to 1 kg.

26. Micron (micro meter) is equal 10^{-6}10-6 times of m. It is denoted by μ (mu).

Angstrom is a unit of length. 1 angstrom is equal 10^{-10}10-10 times m. It is denoted by Å.

27. The three system of units are :

a) CGS system : Centimeter , Gram and second

b) FPS system : Foot , Pound and second

c) SI units : The International System of Units .

28. Parsec is a unit of length.