WorksheetsLaser Technology UNIT-III TYPES OF LASER Quiz
Total questions: 40
Worksheet time: 20mins
During a physics experiment, ARAVINTHAN.V and SAIKUMAR were discussing the life time of an electron in a metastable state. What did they conclude?
10^-3 sec
10^-5 Sec
10^-6 sec
10^-7 sec
During a science experiment, SUBASH observed that a metastable state can have a lifetime ______.
more than the higher energy states
lower than the lower energy states
Lower than the lower laser level
Higher than the lower laser level
During a physics experiment, SATHEESHKUMAR observed that an excited state (except metastable state) has a lifetime of about
10−3 s
10−8 s
10−10 s
10−12 s
During a science experiment, PRAVEEN observed that the laser beam emitted from the device was in the form of .........
only continuous waves
only pulses
pulses or continuous waves
all the above
In a science competition, SAI and KISHORE are discussing the energy levels of different ions that are responsible for lasing action. Which of the following ions do they believe is responsible for this phenomenon?
Al3+
Cr3+
Al2O3
Cr2O3
During a science fair, RUKMINI presented her project on holography. She explained the different types of LASERs used in this fascinating field. Which LASER did RUKMINI mention as being used in holography?
Ruby
He-Ne
Argon ion
Nd-YAG
In a physics lab, REDDY is experimenting with a He-Ne gas laser. He wants to understand the pumping technique used in this type of laser.
Forward bias
Optical pumping
Electrical discharge
High injection current.
During a science fair, BHASKAR was curious about the type of laser used most widely in industrial materials processing applications. He asked his friends AMARENDRA and YASWANTH for their opinions.
Dye Laser
YAG laser
Ruby Laser
Carbon Dioxide Laser
During a science fair, SWATHIKALA presented a project on different types of lasers. She wanted to know which of the lasers have high efficiency.
Ruby
Semiconductor
He-Ne
CO2
In a Laser Technology class, SAFIKUL asked the students to identify an example of a gas laser. What would be the correct answer?
Semiconductor Laser
CO2 Laser
Nd:YAG Laser
Dye Laser
During a Laser Technology project, HEMANTH and SAMEEDH are exploring the method of population inversion that leads to laser action in a CO2 laser. They come across several techniques and need to identify the correct one.
Molecule collision
Direction conversion
Electric discharge
Electron impact
PILLI is conducting an experiment with a CO2 laser. What are the output wavelengths of the CO2 laser he is using?
9.6 and 10.6 micrometers
4.8 and 10.6 micrometers
8.4 and 10.6 micrometers
4.9 and 10.6 micrometers
During a science fair, Vallaba is demonstrating various types of lasers. Which of the following lasers is used in remote sensing applications?
Carbon dioxide Laser
Nd:YAG Laser
He-Ne Laser
Dye laser
Palle and Sriram are discussing the maximum power output of a CO2 laser. What do they think it is?
10 KW
10 W
100 KW
10 mW
In a Physics expo, ARAVINDAN, TEJA, and SHUBHAM are discussing the fundamentals of vibrations in a CO2 laser. They learn about Symmetric stretching, Asymmetric stretching, and ____________ mode.
Symmetric stretching mode
Asymmetric stretching mode
Bending mode
twisting mode
SURENDRA is conducting an experiment where N2 + CO2 = _____ + N2. What should he write in the blank?
CO*2
CO2
CO
N2
During a science fair, BATHUSHA presented a project on different types of lasers. She asked the audience to identify which of the following is an example of a liquid laser.
Semiconductor Laser
CO2 Laser
Nd:YAG Laser
Dye Laser
During a science experiment, REDDY observed that Rhodamine-B produces a wavelength in the 590 nm to _______ nm range.
720nm
660nm
400nm
500nm
KISHORE is curious about the gain medium used in Dye Lasers. Can you help him understand what it is?
Solid
Gas
Liquid
None of the above
During a science project, PUJITHA and SINDHU were discussing the most commonly used dye for dye lasers. They wondered which dye is primarily used in this application. The options they considered were ____
Fluorescein
Coumarin
Stilbene
Rhodamine 6G
TEJOVATHI and PUJITHA are discussing the He – Ne laser in their physics class. They want to know which type of laser it is.
Continuous wave Laser
liquid Laser
Semiconductor laser
Pulsed laser
In a Physics experiment, SANTOSH and BHASKAR are studying the ratio of Helium to Neon in a He-Ne laser. What is the ratio of He to Ne in the laser?
1:10
2:13
10:1
3:15
KISHORE and SANTOSH are discussing the reason for the narrow tube in a He-Ne laser during their physics class.
atomic collision with tube wall constant
atomic collision with tube wall increases
atomic collision with tube wall decreases
there is no effect of narrow tube on He-Ne Laser
PRADEEP was curious about different types of lasers and learned that Helium-Neon is a type of ..............
Solid laser
Gas Laser
Liquid Laser
Diode Laser
In a science project, SANSKAR is exploring the role of He in a He-Ne laser. What is the role of He in this laser?
He is an active medium
population inversion takes place in He
Stimulated emission takes place in He
He atoms helps to excite Ne atoms
VENNA is considering the best application for Nd: YAG lasers. Where is Nd: YAG most commonly used?
Cosmetic Surgery
Welding
Photography
Optical Communications
During a science project, UMAR and LOKESH were discussing the Nd-YAG laser. They wondered what YAG stands for.
Yttrium Aluminium Garnet
Y3Al5O12
Yellow Aluminium Garnet
Both (i) and (ii)
During a science project, RAKESHWER is exploring different types of lasers. He learns that the pumping source in Nd:YAG laser is crucial for its operation. What type of pumping source does he discover?
Chemical
Optical
Electrical
Mechanical
During a science project, SHIRISHA and her friends are exploring different types of lasers. They come across the Nd:YAG laser and want to know what the active medium in it is.
Nd
YAG crystal
Y
AG
During a science fair, SAMEEDH presented a project on different types of lasers. He asked the audience to identify which of the following is an example of a solid state laser.
He-Ne Laser
CO2 Laser
Nd:YAG Laser
Dye Laser
In a science class, NATESH is explaining the active material used in Nd:YAG lasers. What is the active material that B is referring to?
Nd3+
YAG crystal
Y
AG
In a science project, JASWANTH is experimenting with a Doped Insulator Laser, which uses an active medium, --------- doped with Neodymium Nd3+
Yttrium Aluminium Garnet
Aluminium Garnet
chromium
silicon
During a science experiment, LOKESHWAR observed that chromium ions doped in a ruby rod reacted to different colors of light.
absorbs green light
absorbs red light
absorbs white light
emits green light
During a science project, LOKESHWAR and SRIRAM were exploring the properties of different materials. They came across a fascinating substance known as ruby laser. They wondered which ions give rise to laser action in this material.
Al2O3
Cr3+
Al3+
O–
During a science fair, LOGESHWARAN presented a project on laser technology. He explained that the Ruby laser produces a laser beam of wavelength.
6328 Å
6320 Å
6940 Å
6943 Å
During a science project, FAARUKH and MUSTAFA were discussing different types of lasers. They wanted to know which of the following is an example of optical pumping?
Semiconductor Laser
Ruby Laser
YAG Laser
atto Laser
In a science experiment, NAVANEETHA and PREETHI are studying the properties of a ruby rod. They observe that the ends of the ruby rod works as
Pumping source
Active medium
Cavity mirrors
Energy levels
In a science fair, RAJASHEKAR presented a project on lasers. He asked the audience, which of the following is the first invented laser?
Nd:YAG Laser
Dye Laser
Semiconductor Laser
Ruby laser
During a science fair, ARAVINDAN. is demonstrating different types of lasers. He wants to ensure that the laser he uses is considered “eye safe”. Which laser should he choose?
LED based Laser bar-code scanners
The eximer laser
Communications lasers
Ruby Laser
The argon-ion laser was invented in 1964 by _________
Albert Einstein
Maiman
C.K.N.Patel
William Bridges
