Which of the following quantities are dimensionally independent?
I. Dielectric constant II. Momentum III. Efficiency IV. Refractive index
A
I and II
B
II, III and IV
C
I, II, III and IV
D
I, III and IV
Verified Correct Answer: D.
Physical Principles & Numerical Solution
The quantities Efficiency, Dielectric constant and Refractive index are dimensionless.
Source: Myschool Past Questions Archive (Record #49662)