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Q.

 Alpha particle, electron, proton and neutron are moving with same velocity. Correct increasing order of their Debroglie wavelength will be

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a

α, p, n, e

b

e, n, p, α

c

e, p, n, α

d

α, n, p, e

answer is A.

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Detailed Solution

Increasing order means least to highest; λ=hmv;  'h' is constant and given that 'v' is constant; λ∝1m; mass of  e<p<n<α; 'λ'  of α<n<p<e; 

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