Question

If E₁, E₂, and E₃ represent respectively the kinetic energies of an
electron and an alpha particle and a proton each having same de-broglie
wavelength then
(a) E₁ > E₃ > E₂ (b) E₂ > E₃ > E₁
(c) E₁ > E₂ > E₃ (d) E₁ = E₂ = E₃

Answer 1

Answer:

Explanation:

KE= 1/2mu  ^2   and λ=  mu /h

KE=  1/2 mλ 2   ^h  ^2 =  2mλ ^ 2h  ^2

 

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So lesser is the mass, higher is the kinetic enegy so order is

$$E_1 > E_3 > E_2$$

Answer 2

Explanation:

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