Question

1. Physical quantities which cannot form a set of fundamental quantities in mechanics is
(A) mass, acceleration and frequency
(B) length, density and velocity
(C) mass, density and area
(D) force, acceleration and velocity​

Answer 1

Answer:

(B)

.............................

Answer 2

Answer:

Option (B) is the correct answer.

Explanation:

• Option (A) is not correct since all three can form a set of fundamental quantities in mechanics, mass, acceleration for distance and frequency for sound.

• Option (C) is not correct since all three can form a set of fundamental quantities in mechanics.

• Option (D) is not correct since all three can form a set of fundamental quantities in mechanics.

• Option (B) is correct because mass is a fundamental quantity in any form of system but since it does not exist here in this set of fundamental quantities, it does not hold good.

Hence, Option (B) is the correct answer.