In a discharge tube, ionization of enclosed gas is produced due to col

1.	In a discharge tube, ionization of enclosed gas is produced due to collisions between
A.	Neutral gas atoms / molecules
B.	Positive ions and neutral atoms / molecules
C.	Negative electrons and neutral atoms / molecules
D.	Photons and neutral atoms / molecules
Answer» D. Photons and neutral atoms / molecules

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

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