Question

Assertion : Specific gravity of a fluid is a dimensionless quantity.

Reason : It is the ratio of density of fluid to the density of water.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

Correct option (a) Both A and R are true and R is the correct explanation of A

Explanation :

Specific gravity is former name of relative density and relative density is the density of a substance divided by the density of water.

Specific gravity = relative density

density of substance/density of water = dimensionless.