MCQ Questions on Laser Physics

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    MCQ Questions on Laser Physics. We covered all the MCQ Questions on Laser Physics in this post for free so that you can practice well for the exam.

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    MCQ Questions on Laser Physics for Students

    The first type of laser invented by scientists was known as

    a. Pulse laser

    b. Pulsed laser

    c. Permanent laser

    d. None of these

    Option b – Pulsed laser

    The invention of the first pulsed laser took place in

    a. 1964

    b. 1954

    c. 1960

    d. 1968

    Option c – 1960

    The fundamental theory behind the working of lasers was initially proposed by Dr. Charles and H. Townes in

    a. 1954

    b. 1960

    c. 1964

    d. 1950

    Option a – 1954

    A laser can be described as

    a. A light source with typical properties

    b. A light source with exceptional features

    c. An energy source with advanced properties

    d. An energy source with regular characteristics

    Option b – A light source with exceptional features

    Among the following, the monochromatic light source is

    a. The Sun

    b. An incandescent bulb

    c. Sodium vapor lamp

    d. Candle flame

    Option c – Sodium vapor lamp

    Laser light characteristics are absent in the light emitted by

    a. The Sun

    b. Incandescent lamp

    c. Sodium vapor lamp

    d. All of these

    Option d – All of these

    The number of unique and remarkable features that distinguish laser light from ordinary light is

    a. 2

    b. 3

    c. 4

    d. 5

    Option c – 4

    When electrons return to a lower energy state in atoms, the energy released in the form of light is known as

    a. Visible light

    b. Laser light

    c. Ultraviolet light

    d. None of these

    Option a – Visible light

    ICBM refers to

    a. Inter-Continental Ballistic Missile

    b. Inter-Country Ballistic Missile

    c. Inter-Community Ballistic Missile

    d. All of these

    Option a – Inter-Continental Ballistic Missile

    The foundational laser theory was first introduced by

    a. Rontgen

    b. J.J. Thomson

    c. Dr. Charles and H. Townes

    d. Einstein

    Option c – Dr. Charles and H. Townes

    In which type of light source do electrons undergo random transitions, leading to uncoordinated light waves?

    a. Conventional light sources

    b. Laser sources

    c. Both of these

    d. None of these

    Option a – Conventional light sources

    In laser light production

    a. Electrons transition in a synchronized manner, producing waves with fixed phase relations

    b. Electrons transition randomly, producing waves with no fixed phase relationship

    c. Electrons transition randomly, but waves still show fixed phase relation

    d. None of these

    Option a – Electrons transition in a synchronized manner, producing waves with fixed phase relations

    When electrons transition in a well-organized pattern, and light waves maintain a stable phase relation, the resulting light is said to have

    a. Incoherence

    b. Temporal coherence

    c. Directionality

    d. High intensity

    Option b – Temporal coherence

    The most defining feature of laser light is its

    a. Coherence

    b. Directionality

    c. Single color property

    d. Brightness

    Option a – Coherence

    We covered all the MCQ questions on laser physics above in this post for free so that you can practice well for the exam.

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