WorksheetsLaser :Session 1 Quiz
Total questions: 15
Worksheet time: 8mins
When a beam of light enters one medium from another, which quantity will not change?
Direction
Speed
Frequency
Wavelength
Laser light is ______ emission.
Coherent
Stimulated
Spontaneous
Coherent and stimulated
One quantum of light energy is called a (a)
What is the only type of EM waves the human eye can see?
Radio waves
Light waves
Visible light
Gamma ray waves
An electron in ground state is
unstable
stable
fluctuating
vigorous
The atoms _______ energy to raise from a lower energy level to upper energy level
release
absorbs
produce
none of the above
The type of emission of light on its own is called
Spontaneous emission
Stimulated emission
triggered emission
none of the above
The process responsible for laser action
Spontaneous emission
Stimulated emission
Attenuation
Absorption
The coherent nature of light from LASER is due to
Spontaneous emission
Stimulated Emission
Absorption
Pumping
Laser is a coherent source of light. This means all the light waves....
are out of phase
are in phase
have different directions
have same direction
LASING action depends on
Spontaneous emission
Stimulated emission
Spontaneous emission followed by stimulated emissions
Absorption of radiation
