Q.

A sub-atomic particle of mass 10–30 kg is moving with a velocity 2.21×106 m/s. Under the matter wave consideration, the particle will behave closely like __________.

(h=6.63×10–34 Js)          [2025]

1 Infra-red radiation  
2 X-ray  
3 Gamma rays  
4 Visible radiation  

Ans.

(2)

λ=hp=6.63×10–3410–30×2.21×106

=3×10–10 m=3A∘ ⇒ X-ray

Hence, particle will behave as X-ray.