In obtaining an X-ray photograph of our hand we use the principle of______________?

Related Mcqs:

1. A ball of mass 0.2 kg is thrown vertically upwards by applying a force by hand. If the hand moves 0.2 m while applying the force and the ball goes up to 2 in height further, find the magnitude of the force. Consider g = 10m/s 2

   A. 22N
   B. 16N
   C. 20N
   D. 4N

   Submitted by: Huzaifa Naseer

2. X-ray are________________?

   A. of unknown nature
   B. high energy electrons
   C. high energy photons
   D. radio isotopes

3. In an X-ray tube electrons each of charge e are accelerated through V potential difference allowed to hit a metal target. The wavelength of the X-rays emitted is_______________?

   A. he/ev
   B. he/Vc
   C. eV/h
   D. impossible to predict

4. Maximum frequency in the spectrum from X-ray tube is directly proportional to the______________?

   A. Number of incident electron i.e. filament current
   B. The kinetic energy of the incident electron i.e. the potential difference through which they are accelerated
   C. The soft target which can easily emit electrons
   D. All of above are correct

5. A light ray traveling form rarer to denser medium suffers a phase change of__________________?

   A. 60°
   B. 90°
   C. 180°
   D. 45°

6. The linear momentum of an X-ray photon of wavelength 0.1A is_______________?

   A. 6.625x1023N-s
   B. 66.25x1023N-s
   C. 662.5x1023N-s
   D. data is insufficient

7. It is easier to turn a steering wheel with both hands than with a single hand because______________?

   A. Accelerating force increases on the wheel
   B. Two forces act on the wheel
   C. Two hands provide a firm grip
   D. The couple acts on the wheel

8. The angular speed of seconds hand of a watch in rads-1 is______________?

   A. π
   B. π/2
   C. π/30
   D. π/180

9. During the fission process a large amount of______________?

   A. Heat energy is released
   B. Nuclear energy is released
   C. Chemical energy is released
   D. Light energy is released

10. In an electron microscope, we use energetic particles because of______________?

    A. Penetrating power is high
    B. Kinetic energy is large
    C. Wavelength is very short
    D. All the above reasons