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Test: Compton Effect


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10 Questions MCQ Test | Test: Compton Effect

Test: Compton Effect for Mechanical Engineering 2022 is part of Mechanical Engineering preparation. The Test: Compton Effect questions and answers have been prepared according to the Mechanical Engineering exam syllabus.The Test: Compton Effect MCQs are made for Mechanical Engineering 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Compton Effect below.
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Test: Compton Effect - Question 1

Which of the following is the characteristic of a black body?

Detailed Solution for Test: Compton Effect - Question 1

 When the radiations are made to pass through a black body, it undergoes multiple reflections and is completely absorbed. When it is placed in a temperature bath of fixed temperature, the heat radiations will come out. Thus a black body is a perfect absorber and a perfect reflector

Test: Compton Effect - Question 2

The energy distribution is not uniform for any given temperature in a perfect black body. True or false?

Detailed Solution for Test: Compton Effect - Question 2

At different temperatures, when a perfect black body is allowed to emit radiations, then the distribution of energy for different wavelengths at various temperatures is not uniform.

Test: Compton Effect - Question 3

Rayleigh-Jean’s law hold good for which of the following?

Detailed Solution for Test: Compton Effect - Question 3

According to this law, the energy distribution is directly proportional to the absolute temperature and is inversely proportional to the fourth power of the wavelength. Therefore longer the wavelength, greater is the energy distribution.

Test: Compton Effect - Question 4

Wien’s displacement law hols good only for shorter wavelength. True or false?

Detailed Solution for Test: Compton Effect - Question 4

This law states that, the product of the wavelength, corresponding to maximum energy and the absolute temperature, is constant. If ʎ is less, then 1/ʎ will be great. Therefore e(hc/ʎKT) will be great.

Test: Compton Effect - Question 5

Which of the following does not affect the photon?

Detailed Solution for Test: Compton Effect - Question 5

Photons have no charge. They can interact with charged particles but not with themselves. This is why photons are neutral and not affected by magnetic or electric fields.

Test: Compton Effect - Question 6

 What is Compton shift?

Detailed Solution for Test: Compton Effect - Question 6

When a photon collides with an electron at rest, the photon gives its energy to the electron. Therefore the scattered photon will have higher wavelength compared to the wavelength of incident photon. This shift in wavelength is called Compton shift.

Test: Compton Effect - Question 7

Compton shift depends on which of the following?

Detailed Solution for Test: Compton Effect - Question 7

From the theory of Compton effect it is deducted that change in wavelength
Δʎ = h/mc (1-cosɵ). This equation shows that, the change in wavelength is independent of the incident radiation as well as the nature of scattering substance. The shift depends only on the angle of scattering.

Test: Compton Effect - Question 8

Which of the following is called as non-mechanical waves?

Detailed Solution for Test: Compton Effect - Question 8

The waves which travel in the form of oscillating electric and magnetic waves are called electromagnetic waves. Such waves do not require any material for their propagation and are called non-mechanical waves.

Test: Compton Effect - Question 9

Which of the following is associated with electron microscope?

Detailed Solution for Test: Compton Effect - Question 9

 The waves associated with microscopic particles when they are in motion are called matter waves. Electron microscope makes use of the matter waves associated with fast moving electrons.

Test: Compton Effect - Question 10

 A radio station broadcasts its programme at 219.3 metre wavelength. Determine the frequency of radio waves if velocity of radio waves is 3×108 m/s.

Detailed Solution for Test: Compton Effect - Question 10

ʎ = velocity/frequency
Frequency = velocity/ʎ
Therefore, frequency = 1.368×106 Hz

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