A proton and an alpha particle have the same de broglie wavelength determine the acceleration potential
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2 : 1 would be the ratio for accelerating potential .
Charge on alpha particle = 2 q p
Mass of alpha particle = 4 m p
λ a = λ p
h / 2 m a x q a x v a = h / 2 m p x q p x v p
m a x q a x v a = m p x q p x v p
V p / V a = m a x q a / m p x q p
= 4 m p / m p x 2 q p / q p = 2 : 1
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