Tag: option c: imaging

Quizzes (13) Questions (113)

Questions Related to option c: imaging

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

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

  1. 0.0242 $A^{0}$
  2. 0.0484 $A^{0}$
  3. 0.0121 $A^{0}$
  4. 0.242 $A^{0}$
Reveal answer Fill a bubble to check yourself
B Correct answer
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).

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

Which waves are used in sonography?

  1. Microwaves

  2. Infrared rays

  3. Radio rays

  4. Ultrasonic rays
Reveal answer Fill a bubble to check yourself
D Correct answer
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.
Multiple choice detection and recording of x-ray images option c: imaging physics

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 ____________.

  1. photoelectric effect

  2. Raman effect

  3. Compton effect

  4. none of these
Reveal answer Fill a bubble to check yourself
C Correct answer
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.


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

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

  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
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

X-ray tubes produce a continuous spectrum of wavelengths starting from a minimum wavelength (lambda_min) determined by the accelerating voltage, extending to all larger wavelengths.

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

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

  1. Refraction

  2. Reflection

  3. Interference

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

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