Question

The physical quantities which have the same dimensions as [$T^{-1}$] are:

• A. Frequency and Angular velocity
• B. Velocity gradient and radio active disintegration
• C. Both A and B
• D. Wave number, Rydbergs constant

Answer 1

Answer: (C)

Both A and B

Frequency $=\frac{1}{T}$
Angular velocity $=\frac{2\pi }{T}$
Velocity gradient $=\frac{dv}{dx}$
Radiation disintegration constant $=\frac{dC}{dT}$
All four have same dimensions of $T^{-1}$.