de Broglie (1924) predicted that small particles such as electrons should show wave -like properties along with paticle character. The wave length`(lamda)` associated with particle of mass m and moving with velocity v is given as `lamda=h/(mv)` where 'h' is plank's constant. The wave nature was confirmed by Davisson and Germer's experiment and modified equation for calculation of `lamda` can be given as:
`lamda=-h/(sqrt(2Em))` where E= kinetic energy of particle.
`lamda=h/(sqrt(2dVm))`, where d= change of particle accelerated potnetial of V volt.
Velocity of d e-Broglie's waves is given by

Options

A. `(c^(2))/v`
B. `(hv)/(mc)`
C. `(mc^(2))/h`
D. `v lamda`

Explanation

To solve the problem regarding the de Broglie wavelength and the velocity of de Broglie's waves, we can follow these steps:

### Step 1: Understand the de Broglie Wavelength
The de Broglie wavelength (λ) is given by the equation:
\[ \lambda = \frac{h}{mv} \]
where:
- \( h \) is Planck's constant,
- \( m \) is the mass of the particle,
...