In a discharge tube ionization of enclosed gas is produced due to collisions between:

In a discharge tube ionization of enclosed gas is produced due to collisions between:
  1. neutral gas atoms/molecules
  2. positive ions and neutral atoms/ molecules
  3. negative electrons and neutral atoms/ molecules
  4. photons and neutral atoms/molecules

Solution

Negative electrons and neutral atoms collides and causes the ionization of gas enclosed in a discharge tube.

Asked in: NEET 2006

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