Explain this statement clearly : "To call a dimensional quantity … - Vidyadip

Question

Explain this 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 statement 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

(a) The size of an atom is much smaller than the tip of an pin.
(b) Jet aircraft moves at a higher speed than the speed of a helicopter.
(c) The mass of Jupiter is more than the mass of the Earth.
(d) The number of molecules in the air inside a room is more than the number of molecules in one mole of air.
(e) A proton is much heavier than an electron. This statement is true.
(f) This statement is already true.

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