Derive de-Broglie’s equation. What is it...

Derive de-Broglie’s equation. What is its significance?

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What is the de-Broglie wavelength of a electron with kinetic energy of 120 eV?

`1121xx10^(-13)m`

`1121xx10^(-12)m`

`0.1121xx10^(-11)m`

`0.1121xx10^(-10)m`

According to De-Brogli’s principal, what is the relation between momentum and w avelength of m ovable particals

inverse proportion

underroot proportion

same proporotion

none of these

If kinetic energy of emitted electron is made double then its de-Broglie wavelength will become……times initial de-Broglie wavelength.

`sqrt(2)`

`(1)/(sqrt(2))`

`(1)/(2)`