Question

Light energy is obtained in a fluorescent lamp and in CFL as a result of electron emission. Yet, the process of electron emission is different in both cases. What is the difference?

Answer 1

Hint: As the question is based on the light energy obtained from the fluorescent lamp and the CFL, so, we will make use of the properties of the light energy emitted from the fluorescent lamp and the CFL. The material present inside the lamps through which the electrons emit should be known to answer this question.

Complete step by step answer:
Let us go through the difference between the generation and the emission of the electrons from the fluorescent lamp and the CFL.
In the case of the fluorescent lamp - the light gets generated because of the collision of the free accelerated electrons with the atoms and in the case of CFL - the lamp starts to glow when the electric current is driven through a tube wire until the filaments heat up. The entire process of the CFL electron emission takes more time than the other lamps.
We can notice that the generation and the emission of the electrons are completely different and the electron emission in both the cases is very low.

Additional information:
CFL stands for compact fluorescent lamp. When we consider the term, energy efficient, the CFL is more energy efficient compared to that of the fluorescent lamps. The CFL is a type of fluorescent lamp but is a compact version.

Note: Both the lamps emit light/glow because of the electron emission, but the process of generation of the electron emission is different. So, this is the difference. In order to answer this question, the theory related to the construction and the working of the fluorescent lamp and the CFL should be known.