Laser Principles MCQs with Answers

adminApril 12, 2024

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

Laser Principles Online Quiz

By presenting 3 options to choose from, Laser Principles 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 Laser Principles Questions and Answers and click over the correct answer.

Test Name: Laser Principles MCQ Quiz Practice
Type: Quiz Test
Total Questions: 40
Total Marks: 40
Time: 40 minutes

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Laser Principles

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1 / 40

In laser operation, what is the process of raising electrons to higher energy levels called?

Pumping

Excitation

Ionization

2 / 40

What is the term for the process by which electrons return to lower energy levels and emit photons in a laser system?

Stimulated emission

Absorption

Spontaneous emission

3 / 40

Which process occurs when the number of photons leaving the laser cavity exceeds the number of photons entering it, resulting in laser output?

Stimulated emission

Population inversion

Laser oscillation

4 / 40

What is the term for the condition where the number of electrons in the excited state exceeds the number in the ground state in the lasing medium?

Population inversion

Excited state

Ground state

5 / 40

What determines the wavelength of laser emission in a particular laser system?

Refractive index

Energy levels of the lasing medium

Pumping mechanism

6 / 40

What is the term for the optical cavity that reflects light back and forth, allowing stimulated emission to amplify the light?

Reflector

Amplifier

Resonator

7 / 40

Which type of laser cavity consists of two parallel mirrors with reflective coatings on their ends?

Fabry-Perot cavity

Optical resonator

Ring cavity

8 / 40

What is the term for the condition where the number of electrons in the excited state exceeds the number in the ground state in the lasing medium?

Population inversion

Excited state

Ground state

9 / 40

Which property of laser light allows it to be focused to a very small spot size?

Dispersion

Coherence

Diffraction

10 / 40

What is the term for the process of maintaining a population inversion in the lasing medium?

Excitation

Lasing

Pumping

11 / 40

Which property of laser light makes it different from ordinary light sources such as incandescent bulbs?

Dispersion

Coherence

Absorption

12 / 40

Which process occurs when the number of photons leaving the laser cavity exceeds the number of photons entering it, resulting in laser output?

Stimulated emission

Population inversion

Laser oscillation

13 / 40

Which type of laser cavity consists of two parallel mirrors with reflective coatings on their ends?

Ring cavity

Optical resonator

Fabry-Perot cavity

14 / 40

What is the term for the amplification of light by stimulated emission in a laser medium?

Excitation

Absorption

Gain

15 / 40

What is the term for the process of raising electrons to higher energy levels in the lasing medium?

Pumping

Excitation

Ionization

16 / 40

Which type of laser cavity has curved mirrors to confine the laser beam in a circular path?

Optical resonator

Ring cavity

Fabry-Perot cavity

17 / 40

What is the primary requirement for achieving laser action in a medium?

Population inversion

Energy absorption

Fluorescence

18 / 40

Which type of laser cavity uses two mirrors, one fully reflective and the other partially reflective, to produce laser output?

Fabry-Perot cavity

Ring cavity

Optical resonator

19 / 40

What does the acronym LASER stand for?

Light Absorption by Stimulated Emission of Radiation

Light Amplification by Spontaneous Emission of Radiation

Light Amplification by Stimulated Emission of Radiation

20 / 40

Which laser property refers to the uniform alignment of the electromagnetic waves in space and time?

Coherence

Polarization

Dispersion

21 / 40

What is the term for the number of photons emitted by stimulated emission exceeding the number of photons lost by absorption or leakage?

Absorption

Excitation

Gain

22 / 40

Which type of laser cavity uses two mirrors, one fully reflective and the other partially reflective, to produce laser output?

Optical resonator

Ring cavity

Fabry-Perot cavity

23 / 40

Which process is essential for achieving population inversion in the lasing medium?

Absorption

Reflection

Pumping

24 / 40

Which laser property refers to the ability of laser light to travel over long distances with minimal divergence?

Collimation

Dispersion

Polarization

25 / 40

What is the primary function of the lasing medium in a laser system?

Amplify light

Absorb light

Reflect light

26 / 40

What is the primary requirement for achieving laser action in a medium?

Fluorescence

Population inversion

Energy absorption

27 / 40

What is the term for the process by which incident photons trigger the emission of additional photons of the same frequency, phase, and direction?

Stimulated emission

Absorption

Spontaneous emission

28 / 40

Which optical element at the ends of the laser cavity allows light to enter and exit while minimizing losses?

Laser lens

Laser mirrors

Laser diode

29 / 40

Which phenomenon forms the basis of laser operation?

Reflection

Stimulated emission

Absorption

30 / 40

What is the term for the process of converting electrical energy into light energy in a laser system?

Excitation

Amplification

Pumping

31 / 40

What is the term for the process of converting electrical energy into light energy in a laser system?

Amplification

Excitation

Pumping

32 / 40

What is the term for the spontaneous emission of light by atoms or molecules returning from excited states to lower energy states?

Absorption

Stimulated emission

Spontaneous emission

33 / 40

What is the term for the amplification of light by stimulated emission in a laser medium?

Gain

Absorption

Excitation

34 / 40

Which property of laser light makes it different from ordinary light sources such as incandescent bulbs?

Absorption

Coherence

Dispersion

35 / 40

Which process is essential for achieving population inversion in the lasing medium?

Absorption

Reflection

Pumping

36 / 40

What is the term for the number of photons emitted by stimulated emission exceeding the number of photons lost by absorption or leakage?

Excitation

Gain

Absorption

37 / 40

What is the term for the process of ensuring that the lasing medium contains more atoms or molecules in the excited state than in the ground state?

Excitation

Amplification

Population inversion

38 / 40

What determines the directionality of laser beams?

Stimulated emission

Laser resonator

Optical cavity

39 / 40

What is the term for the process of maintaining a population inversion in the lasing medium?

Excitation

Lasing

Pumping

40 / 40

Which property of laser light allows it to be focused to a very small spot size?

Dispersion

Coherence

Diffraction

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adminApril 12, 2024

0 7 1 minute read