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 on Laser for School Students
The first laser developed by the scientists was called
1. Pulse laser
2. Pulsed laser
3. Permanent laser
4. None of these
Option 2 – Pulsed laser
The first laser called ‘pulsed laser’ was developed in the year
1. 1964
2. 1954
3. 1960
4. 1968
Option 3 – 1960
The basic scientific principle behind a laser was first put forward by Dr. Charles & H. Townes in the year
1. 1954
2. 1960
3. 1964
4. 1950
Option 1 – 1954
Laser is simply a
1. Source of light having ordinary properties
2. Source of light having extra-ordinary properties
3. Source of energy having extra ordinary properties
4. Source of energy having ordinary properties
Option 2 – Source of light having extra-ordinary properties
A monochromatic source of light among the following is
1. Sun
2. Incandescent lamp
3. Sodium vapour lamp
4. Candle light
Option 3 – Sodium vapour lamp
The properties of laser light are not present in the light emitted from
1. Sun
2. Incandescent lamp
3. Sodium vapour lamp
4. All of these
Option 4 – All of these
The no. of characteristic and striking proper ties with which a laser light is distinguished from an ordinary light, is
1. 2
2. 3
3. 4
4. 5
Option 3 – 4
The light excited energy which is emitted when the electrons in atoms undergo transitions to the ground state, is
4. None of these
ICBM stands for
1. Inter-Continental Ballistic Missile
2. Inter-Country Ballistic Missile
3. Inter-Community Ballastic Missile
4. All of these
Option 1 – Inter-Continental Ballistic Missile
The basic scientific principle behind laser was first put forward by
1. Rontgen
2. J.J. Thomson
3. Dr. Charles & H. Townes
4. Einstein
Option 3 – Dr. Charles & H. Townes
The light sources in which the electron transaction takes place at random in time and the light waves received at a point on a screen hear no definite phase relation among them, is
1. Ordinary light sources
2. Laser light sources
3. Both of these
4. None of these
Option 1 – Ordinary light sources
In a laser source of light
1. Electronic transitions take place in an ‘orderly way’ and the light waves emitted have a consistent phase relation which do not change with time
2. Electronic transitions take place at random in time and the light waves received at a point on a screen bear no definite phase relation among them
3. Electronic transitions take place at random in time and the light waves received at a point on a screen a definite phase relation among them
4. None of these
Option 1 – Electronic transitions take place in an ‘orderly way’ and the light waves emitted have a consistent phase relation which do not change with time
The characteristic of light which is emitted by the electronic transitions which take place in an ‘orderly way’ and the light waves emitted M have a constant phase relation, is
1. Incoherence
2. Temporal coherence
3. Directionality
4. Intensity
Option 2 – Temporal coherence
The most important characteristic of laser light, is
1. Coherence
2. Directionality
3. Monochromacity
4. Intensity
Option 1 – 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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Very very helpful and interesting one
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