The dimensional formula of physical quantity is `M^(a) L^(b) T^( c)` . Then that physical quantity is

Options

A. surface tension if `a = 1 , b =1 , c = -2`
B. force if a = 1 , b = 1 , c= 2
C. angular frequency if a = 0 , b = 0 , c = -1
D. spring constant if a = 1 , b = -1 , c = -2

Answer

C

Explanation

Angular frequency = `2pi xx` Frequency
= `[T^(-1)] = [M^(0) L^(0) T^(-1)]`
`therefore a =0 , b = 0 , c = -1`