Modern Physics 1 Question 34

31. The speed of the particle that can take discrete values is proportional to

(2009)

(a) n3/2

(b) n1

(c) n1/2

(d) n

Passage 3

In a mixture of HHe+gas (He+is singly ionized He atom), H atoms and He+ions are excited to their respective first excited states. Subsequently, H atoms transfer their total excitation energy to He+ions (by collisions). Assume that the Bohr model of atom is exactly valid.

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Solution:

  1. From Eq. (i)

pn or mvnvn



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