If c (the velocity of light), g (the acceleration due to gravity), and P (the atmospheric pressure) are the fundamental quantities in MKS system, then the dimensions of length will be same as that of :
Answer & explanation
Correct answer: option 4
[L] = [ca gb \(\rho\)c]
[L] = [LT-1]a [LT-2]b [ML-1T-2]c
On solving for a, b and c : a = 2; b = -1; c = 0
\([\frac{c^2}{g}] = [L]\)