The penetrating power of X-rays depends on their______________?

Related Mcqs:

1. Which one of the following radiation possesses maximum penetrating power ?

   A. X-rays
   B. B-rays
   C. γ-rays
   D. All have the equal penetrating powe

2. Quality of X-rays depends upon ____________ A-filament current B-accelerating voltage C-material of the target ?

   A. A & B
   B. B & C
   C. A & C
   D. A B & C

3. Hydrogen atom does not emit X-rays because _________________?

   A. its energy levels are too close to each other
   B. its energy levels are too far apart
   C. it is too small in size
   D. it has a single electron

4. X-rays are similar in nature to_______________?

   A. Cathode rays
   B. Positive rays
   C. γ-rays
   D. Beta rays

5. When X-rays are passed through successive aluminum sheets what happens to their thickness ?

   A. increases
   B. it decreases
   C. it remains same
   D. sometimes increases and sometimes decreases

6. 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

7. The minimum wavelength of X-rays can further be reduced by _______________?

   A. Reducing the pressure or cooling the target
   B. Increasing the temperature of the filament.
   C. Using a target element of higher atomic number
   D. Increasing the potential difference between the cathode and the target

8. The characteristic X-rays spectrum is due to_____________?

   A. The illumination of the target metal by ultra-violet radiation
   B. The bombardment of the target by protons
   C. The bombardment of target by electrons
   D. The absorption of radiation by the target metal

9. The minimum wavelength of X-rays produced by the bombardment of electrons on the screen of a television set where the accelerating potential is 2.0K V will be______________?

   A. 6.2 x 10-10m
   B. 9.1 x 10-18m
   C. 3.11 x 10-10m
   D. 4 x 10-10m

10. X-rays are diffracted by a crystal but not by a diffraction grating because_____________?

    A. The ions in a crystal are well arranged
    B. The lines in a diffraction grating cannot reflect X-rays.
    C. The penetration power of X-rays is high in a diffraction grating
    D. The wavelengths of X-rays are of the same order of magnitude as the separation between atoms in a crystal