WorksheetsLASER
Total questions: 10
Worksheet time: 5mins
LASER is an acronym of
Light Amplification by Spontaneous Emission of Radiation
Light Amplification by Stimulated Emission of Radiation
Light Advances by Spontaneous Emission of Radiation
Light Advances by Stimulated Emission of Radiation
Induced Absorbtion
Spontaneous Emission
Stimulated Emission
The condition/conditions required for the lasing action
Metastable state
Population Inversion
Any excited state
None
Pumping source for LASER production
Optical
Electrical
Diode laser
Water
The length of the lasing tube must be equal to
integral multiple of wavelength of laser
integral multiple of half of the wavelength of the laser
wavelength of the laser
Quarter of the wavelength of laser
In Ruby laser, the color of the ruby depends on
Al ions concentration
Oxygen concentration
Cr ions concentration
Si ion concentration
In Ruby laser, the laser of wavelength 693.4nm is produced during the transition of Cr ions from
Ground state (E0) to Excited state (E2)
Ground state(E0) to Metastable state (E1)
Excited state (E2) to Metastable state (E1)
Metastable state (E1) to Ground state (E0)
YAG stands for
(a)
Lasers are used in
Cutting, drilling & welding
Surgeries
Scanners
Telecommunication
Range finder using laser (LIDAR) works on the principle of
(a)
