The wavelength associtated with a golf ball weight `200 g` and moving at a speed of `5 m h^(-1)` is of the order

Options

A. `10^-10 m`
B. `10^-20 m`
C. `10^-30 m`
D. `10^-40 m`

Answer

C

Explanation

(a) According to de-Broglie's equation
`lamda = (h)/(p) = (h)/(mv)`
Given, `h = 6.6 xx 10^-34 J s`
`m = 200 xx 10^-3 kg`
`v = (5)/(60 xx 60) m//s`
`lamda = (6.6 xx 10^-34)/(200 xx 10^-3 xx 5 //(60 xx 60)) = 2.38 xx 10^-30 m`.