Lasers and Optical Devices MCQs with Answers

adminJune 12, 2024

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Welcome to the Lasers and Optical Devices MCQs with Answers. In this post, we have shared Lasers and Optical Devices Online Test for different competitive exams. Find practice Lasers and Optical Devices Practice Questions with answers in Physics Tests exams here. Each question offers a chance to enhance your knowledge regarding Lasers and Optical Devices.

Lasers and Optical Devices Online Quiz

By presenting 3 options to choose from, Lasers and Optical Devices Quiz which cover a wide range of topics and levels of difficulty, making them adaptable to various learning objectives and preferences. You will have to read all the given answers of Lasers and Optical Devices Questions and Answers and click over the correct answer.

Test Name: Lasers and Optical Devices MCQ Quiz Practice
Type: Quiz Test
Total Questions: 40
Total Marks: 40
Time: 40 minutes

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Lasers and Optical Devices

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1 / 40

Which type of laser is commonly used in communication systems for optical signal amplification?

Fiber laser

Helium-neon laser

Semiconductor laser

2 / 40

What is the active medium in a fiber laser?

Gas

Semiconductor material

Optical fiber

3 / 40

Which type of laser is commonly used in barcode scanners?

Diode-pumped solid-state laser

Helium-neon laser

Semiconductor laser

4 / 40

In a laser, what process is responsible for the emission of coherent light?

Stimulated emission

Absorption

Spontaneous emission

5 / 40

Which of the following is NOT a type of laser gain medium?

Liquid

Gas

Metal

6 / 40

What is the active medium in a dye laser?

Solid-state crystal

Semiconductor material

Organic dye molecules

7 / 40

What is the primary function of an optical detector?

Amplifying light

Modulating light

Detecting light

8 / 40

What is the primary function of a laser cavity?

Provide feedback

Generate light

Amplify light

9 / 40

What is the active medium in a helium-neon laser?

Helium and neon gas

Semiconductor material

Solid-state crystal

10 / 40

Which of the following is NOT a property of laser light?

Incoherence

Directionality

Monochromaticity

11 / 40

Which type of laser is commonly used in military applications for target designation and rangefinding?

Semiconductor laser

CO2 laser

12 / 40

What is the primary function of a laser beam profiler?

Modulating light

Characterizing beam properties

Amplifying light

13 / 40

What is the primary function of a laser diode?

Amplifying light

Emitting coherent light

Detecting light

14 / 40

What type of gain medium is commonly used in solid-state lasers?

Gas

Crystal

Liquid

15 / 40

Which type of laser is commonly used in ophthalmology for vision correction surgeries?

Semiconductor laser

Excimer laser

CO2 laser

16 / 40

What is the primary function of an optical amplifier?

Amplifying light

Modulating light

Detecting light

17 / 40

What is the primary function of a laser rangefinder?

Filtering light

Measuring distance

Modulating light

18 / 40

What is the typical wavelength range of an excimer laser?

Ultraviolet

Visible

Near-infrared

19 / 40

What is the typical wavelength range of a diode laser?

Visible

Near-infrared

Ultraviolet

20 / 40

Which optical device is used to control the intensity of laser light?

Optical isolator

Optical attenuator

Optical amplifier

21 / 40

What is the active medium in a tunable laser?

Solid-state crystal

Semiconductor material

Dye molecules

22 / 40

What is the primary function of an optical isolator?

Modulating light

Amplifying light

Preventing back reflections

23 / 40

Which type of laser is commonly used in military applications for target designation and rang finding?

CO2 laser

Semiconductor laser

DPSS lasers

24 / 40

What is the most common method for pumping solid-state lasers?

Diode

Flashlamp

Gas discharge

25 / 40

What is the primary advantage of using a fiber laser over other types of lasers?

Compact size

Long coherence length

High efficiency

26 / 40

Which type of laser is commonly used in communication systems for optical signal amplification?

Fiber laser

Helium-neon laser

Semiconductor laser

27 / 40

Which type of laser is commonly used in medical procedures for cutting and cauterizing tissue?

CO2 laser

Dye laser

Excimer laser

28 / 40

What is the function of the Q-switch in a pulsed laser?

Amplifying light

Filtering light

Controlling pulse duration

29 / 40

Which optical device is used to separate different wavelengths of light?

Diffraction grating

Optical filter

Beam splitter

30 / 40

What is the primary function of an optical coupler?

Splitting optical signals

Amplifying light

Combining optical signals

31 / 40

What does the term "LASER" stand for?

Light Attenuation by Spontaneous Emission of Radiation

Light Absorption by Stimulated Emission of Radiation

Light Amplification by Stimulated Emission of Radiation

32 / 40

Which type of laser is commonly used in spectroscopy for analyzing chemical compounds?

Semiconductor laser

Tunable laser

CO2 laser

33 / 40

What is the active medium in a CO2 laser?

Solid-state crystal

Semiconductor material

Carbon dioxide gas

34 / 40

What is the active medium in a semiconductor laser?

Semiconductor material

Liquid

Gas

35 / 40

What is the active medium in a Nd

Gas

Semiconductor material

Neodymium-doped yttrium aluminum garnet

36 / 40

What is the primary function of an optical modulator?

Filtering light

Amplifying light

Modulating light

37 / 40

What is the primary function of a laser resonator?

Provide optical feedback

Amplify light

Generate light

38 / 40

What is the primary function of an optical switch?

Routing optical signals

Amplifying light

Modulating light

39 / 40

Which type of laser is commonly used in DVD players?

Helium-neon laser

Semiconductor laser

CO2 laser

40 / 40

What is the active medium in an excimer laser?

Rare gas and halide molecules

Solid-state crystal

Semiconductor material

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adminJune 12, 2024

0 21 1 minute read