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

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

Energy absorption

Population inversion

Fluorescence

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

Spontaneous emission

Absorption

3 / 40

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

Excitation

Pumping

Lasing

4 / 40

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

Ionization

Excitation

Pumping

5 / 40

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

Laser oscillation

Stimulated emission

Population inversion

6 / 40

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

Coherence

Absorption

Dispersion

7 / 40

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

Dispersion

Diffraction

Coherence

8 / 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

9 / 40

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

Coherence

Dispersion

Absorption

10 / 40

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

Polarization

Dispersion

Collimation

11 / 40

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

Reflect light

Absorb light

Amplify light

12 / 40

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

Refractive index

Pumping mechanism

Energy levels of the lasing medium

13 / 40

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

Diffraction

Coherence

Dispersion

14 / 40

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

Pumping

Ionization

Excitation

15 / 40

What determines the directionality of laser beams?

Optical cavity

Stimulated emission

Laser resonator

16 / 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?

Ground state

Population inversion

Excited state

17 / 40

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

Amplification

Pumping

Excitation

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

Optical resonator

Fabry-Perot cavity

Ring cavity

21 / 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

22 / 40

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

Stimulated emission

Absorption

Spontaneous emission

23 / 40

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

Coherence

Polarization

Dispersion

24 / 40

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

Gain

Excitation

Absorption

25 / 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?

Ground state

Population inversion

Excited state

26 / 40

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

Excitation

Pumping

Amplification

27 / 40

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

Ring cavity

Optical resonator

Fabry-Perot cavity

28 / 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

Absorption

Gain

29 / 40

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

Reflection

Pumping

Absorption

30 / 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?

Absorption

Spontaneous emission

Stimulated emission

31 / 40

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

Gain

Excitation

Absorption

32 / 40

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

Excitation

Pumping

Lasing

33 / 40

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

Reflection

Absorption

Pumping

34 / 40

Which phenomenon forms the basis of laser operation?

Reflection

Stimulated emission

Absorption

35 / 40

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

Optical resonator

Ring cavity

Fabry-Perot cavity

36 / 40

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

Fluorescence

Energy absorption

Population inversion

37 / 40

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

Absorption

Excitation

Gain

38 / 40

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

Resonator

Reflector

Amplifier

39 / 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

Laser oscillation

Population inversion

40 / 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?

Population inversion

Amplification

Excitation

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adminApril 12, 2024

0 9 1 minute read