If the de-Brolie wavelength for a proton and for a alpha-particle are equal, then the ratio of their velocities will be

If the de-Brolie wavelength for a proton and for a alpha-particle are

1.	If the de-Brolie wavelength for a proton and for a alpha-particle are equal, then the ratio of their velocities will be
Answer» `4 : 1` `2 : 1` `1 : 2` `1 : 4` Solution :`LAMBDA =H/(mv)" ":. v=h/(m lambda)` `v prop 1/m` `v_(p)/v_(prop)=m_(prop)/m_(p)=(4m_(p))/m_(p)=4/1`

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If the de-Brolie wavelength for a proton and for a alpha-particle are equal, then the ratio of their velocities will be

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