Laser

Quiz
•
Physics
•
University
•
Medium
Standards-aligned
prakasam kavitha
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51 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
This situation shows that
light travels in a straight line
light is everywhere
light penetrates certain objects
light is produces by the Sun
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Acronym for LASER is
Light Absorption by Stimulated Emission of Radiation
Light Amplification by Stimulated Emission of Radiation
Light Alteration by Stimulated Emission of Radiation
Light Attenuation by Stimulated Emission of Radiation
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following statements are true?
- LASER is used as optical source in single mode fibers.
- LASER lights are highly incoherent.
1. is true and 2. is false
1. is false and 2. is true
Both 1 & 2 are true
Both 1 & 2 are false
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Naturally occuring process in a LASER is
Stimulated Emission
Absorption
Spontaneous Emission
Population Inversion
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The process in which the electrons in the ground state are vibrated to the excited states by providing extra energy from energy sources is called as
Population Inversion
Spontaneous emission
Stimulated emission
Pumping
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Light amplification in LASER is achieved by
Population inversion
Stimulated emission
Spontaneous emission
Pumping
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Minimum number of energy states required to achieve population inversion is
1
2
3
4
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