Question

If the velocity of an electron is doubled, its de broglie frequency will
1. Be halved
2. Remain same
3. Be doubled
4. Become four times
Ans is 3. But how??

Answer 1

If the velocity of an electron is doubled, its de broglie frequency will
3) be doubled

Answer 2

Explanation:

The De-Broglie wavelength is given by :

$\lambda=\dfrac{h}{mv}$

h is Planck's constant

m is mass of electron

v is velocity of electron

If f is the frequency of frequency, then

$\lambda=\dfrac{v}{f}$

So,

$\dfrac{v}{f}=\dfrac{h}{mv}$

It implies,

$f\propto v$, frequency is directly proportional to the velocity of an electron.

If the velocity of an electron is doubled, its De- Broglie frequency will be doubled.

Hence, the correct option is (3).

Learn more,

De-Brollie wavelength

https://brainly.in/question/6131028