Mention the significance of Davisson-Germer experiment. An `alpha`-particle and a phton are accelerated from rest through the same potential difference `V`. Find the ratio of de-Broglie wavelengths associated with them.

Mention the significance of Davisson-Germer experiment. An `alpha`-par

1.	Mention the significance of Davisson-Germer experiment. An `alpha`-particle and a phton are accelerated from rest through the same potential difference `V`. Find the ratio of de-Broglie wavelengths associated with them.
Answer» Davisson-Germer experiment establishers the existence of matter waves. `K.E`. Gained by a charged particle when accelerated `V` volts is: `K=(1)/(2)mv^(2)=qv` `:. v=sqrt((2qv)/(m))` de-Broglie wavelength of the particle, `lambda=(h)/(mv)=(h)/(msqrt((2qV)/(m)))=(h)/(sqrt(2mqv))` For same `V`, `(lambda(alpha-"particle"))/(lambda("proton"))=sqrt((m_(p)q_(p))/(m_(alpha)q_(alpha)))=sqrt((m_(p)e)/(4m_(p).2e))=(1)/(sqrt(8))=(1)/(2sqrt(2))`

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Mention the significance of Davisson-Germer experiment. An `alpha`-particle and a phton are accelerated from rest through the same potential difference `V`. Find the ratio of de-Broglie wavelengths associated with them.

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