Question

Explain the statement clearly:

"To call a dimensional quantity. 'large' or 'small' is meaningless without specifying a standard for comparison". In view of this reframe the following statements wherever necessary: 

(a) Atoms are very small objects.

(b) a jet plane moves with great speed.

(c) the mass of Jupiter is very large.

(d) the air inside this room contains a large number of molecules.

(e) a proton is much more massive than  an electron.

(f) the speed of sound is much smaller than the speed of light.

Answer 1

(a) Atoms are very small as compared to the tip of a pin.

(b) A Jet plane moves with higher speed as compared to a helicopter.

(c) The mass of Jupiter is very large as compared to the size of the earth.

(d) The air inside the room contains a large number of molecules as compared to that in one mole of a gas.

(e) and (f) Statements need not be reframed.