Question

(a) Siik.
5. Which of the following is incorrect about plasma?
(a) Fluorescent tube and neon sign bulbs consist of
plasma.
(b) The gas gets ionized when electrical energy flows
through it.
(c) It consists of super-energetic and super-excited
particles.
(d) The plasma glows with color which does not
depend upon nature of gas.​

Answer 1

Option d) The plasma glows with color which does not depend upon the nature of the gas.​

• The color of the glow is dependent upon the electrons that are emitted during the process of recombining with other ions.
• Different gases will emit different electrons, which will result in a different color of the glow.
• This is also the reason why stars have such vivid colors when observed in a telescope. The gases surrounding each star have a different composition which results in different colors.

Answer 2

Option d) The plasma glows with color which does not depend upon the nature of the gas.​

The color of the glow is dependent upon the electrons that are emitted during the process of recombining with other ions.

Different gases will emit different electrons, which will result in a different color of the glow.

This is also the reason why stars have such vivid colors when observed in a telescope. The gases surrounding each star have a different composition which results in different colors.