Question

when would the wavelength associated with an electron be equal to wavelength associated with proton

Answer 1

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We know wavelength Lambda=h/mv where h is Constant. 
So when wavelength associated with proton equals wavelength associated electron, then 
h/MV=h/mv where M is mass of proton and V is velocity of proton while m is mass of electron and v is velocity of electron. Simplifying the above equation, we get, 
v=MV/m 
v=1.67262*10^-27 * V / 9.10939*10^-31 
v=1837 V 

Hence when the velocity of the electron becomes 1837 times the velocity of proton both will have same Wavelength

Answer 2

Answer:

1837 v

Explanation:

v = MV / v

v = 1.67262 × 10^-27 v / 9.10939 × 10^-31

v = 1837 V