Give an example of a physical quantity which has a unit but no dimensions.

Question

Give an example of

(a) a physical quantity which has a unit but no dimensions.

(b) a physical quantity which has neither unit nor dimensions.

(c) a constant which has a unit.

(d) a constant which has no unit.

Answer 1

(a) Angle or solid angle

(b) Relative density, etc.

(c) Planck’s constant, universal gravitational constant, etc.

(d) Raynold number