Tag: option c: imaging

Questions Related to option c: imaging

A photon recoils back after striking a free electron. Then the value of compton shift is

detection and recording of x-ray images option c: imaging physics

  1. 0.0242 $A^{0}$

  2. 0.0484 $A^{0}$

  3. 0.0121 $A^{0}$

  4. 0.242 $A^{0}$

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Correct Option: B
Explanation:

$\lambda -\lambda \ '=\dfrac{h}{m _{e}c}(1-cos\theta )$


$\Delta \lambda =\dfrac{6.62\times 10^{-34}}{9.1\times 10^{-31}\times 3\times 10^{8}}(1-cos180)$

$=0.0484\ A^{0}$
So, the answer is option (B).

Which waves are used in sonography?

detection and recording of x-ray images option c: imaging physics

  1. Microwaves

  2. Infrared rays

  3. Radio rays

  4. Ultrasonic rays

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Correct Option: D
Explanation:
Ultrasound imaging is also termed as the ultrasound scanning or sonography, This technique uses the small probe along with the gel placed on the skin. The sound waves of very high frequency (Ultrasonic sound) are sent into the body via gel using the probes to obtain the images of body parts.

Therefore, the sonography or ultrasonic scanning uses the Ultrasonic rays.

When X-rays or gamma rays interact with matter, there is a decrease in the energy of the X-rays or gamma rays. This is known as the ____________.

detection and recording of x-ray images option c: imaging physics

  1. photoelectric effect

  2. Raman effect

  3. Compton effect

  4. none of these

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Correct Option: C
Explanation:

Compton effect

When a light wave (Photon) is incident on an electron, there is a decrease in energy of a photon as a part of its initial energy is transferred to the electron which is scattered. This effect is called Compton effect.


The $X-$ray beam emerging from an $X-$ray tube

detection and recording of x-ray images option c: imaging physics

  1. is monochromatic

  2. contains all wavelength smaller than a certain maximum wavelength

  3. contains all wave length larger than a certain minimum wavelength

  4. contains all wave length lying between a minimum and a maximum wavelength

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Correct Option: C

White light is a mixture of

physics option c: imaging sunlight - white and coloured sunlight - combination of 7 lights fibre optics basics

  1. seven colors

  2. nine colors

  3. fifteen colors

  4. seventeen colors

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Correct Option: A
Explanation:

White light is made up of seven colors namely Violet, Indigo, Blue, Green, Yellow, Orange, Red commonly remembered by using the acronym VIBGYOR. 

Hence, the correct answer is OPTION A.

Splitting of light into its constituent colours is known as :

physics option c: imaging sunlight - white and coloured sunlight - combination of 7 lights fibre optics basics

  1. Reflection

  2. Refraction

  3. Diffraction

  4. Dispersion

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Correct Option: D
Explanation:

When white light splits into different colors with different wavelengths then it is known as dispersion.

Clouds are white because of light scattering off of water droplets.

physics option c: imaging sunlight - white and coloured sunlight - combination of 7 lights fibre optics basics

  1. True

  2. False

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Correct Option: A
Explanation:

''Clouds are white because of light scattering off of water droplets''.  It is true as reflection is also scattering but in a defined way.

The splitting of white light into several colours on passing through a glass prism is due to -

physics option c: imaging sunlight - white and coloured sunlight - combination of 7 lights fibre optics basics

  1. Refraction

  2. Reflection

  3. Interference

  4. None of these

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Correct Option: A
Explanation:

The splitting of white light into its constituent colour is called dispersion. Dispersion occurs because refraction or bending differs with the colour.

The colour are characterised by which of following character of light.

physics option c: imaging sunlight - white and coloured sunlight - combination of 7 lights fibre optics basics

  1. Frequency

  2. Amplitude

  3. Wavelength

  4. Velocity

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Correct Option: C
Explanation:

White light is incident combination of various colours each having different wavelengths. 

Thus colour is characterised by wavelength of light. 

In an oscilloscope the vertical deflecting plates deflect the electron beam in a vertical plane.

physics option c: imaging xx radio telescope and space telescopes optical instruments : telescope

  1. True

  2. False

  3. Nither

  4. Either

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Correct Option: A