Question

The dimensional formula of wave number is

• A. $M^{0}L^{0}T^{- 1}$
• B. $M^{0}L^{- 1}T^{0}$
• C. $M^{- 1}L^{- 1}T^{0}$
• D. $M^{0}L^{0}T^{0}$

Answer 1

Answer: (B)

$M^{0}L^{- 1}T^{0}$

Answer 2

Wave number = $\frac{1}{\lambda}$ ∴ dimension is $\lbrack M^{0}L^{- 1}T^{0}\rbrack$