NEW
Font size
WorksheetsLASER
Total questions: 10
Worksheet time: 5mins
The acronym LASER stands for...
light amplification by standart emission of ray
light amplification by semiconductor emission radiant
light amplification by stimulated emission of radiation
low amplification by stimulated emission radiation
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
Laser is a monochromatic source of light. This means all the light waves have...
same wavelength
same phase
same intensity
same direction
In spontaneous emission the incident and emitted waves are...
similar
different
amplified
coherent
Albert Einstein discovered the most important process of the laser. What is it?
Einstein Process
photon emission
medium process
stimulated emission
Pump system needs to raise the atoms from...
exited state to ground state
ground state to exited state
ground state to unexcited state
excited state to exited state
Red-light laser contain a long crystal made of ...
agate
tourmaline
coral
ruby
The resonator consists of ... mirrors at least.
2
3
4
5
The medium in which atoms are excited called...
amplifying
gain
increasing
magnifying
The first laser was built in...
1920
1940
1960
1980
