In Davisson-Germer experiment the diffracted proton from crystal shows______________?

Related Mcqs:

1. Davison Germer experiment indicates__________________?

   A. Interference
   B. Polarization
   C. Electron diffraction
   D. Refraction

2. 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

3. Proton electron neutron and a particles have same momentum. Which of them have highest K.E ?

   A. Proton
   B. electron
   C. neutron
   D. a-particle

4. Neutron and proton are commonly known as______________?

   A. Nucleon
   B. Meson
   C. Boson
   D. Quartz

5. A particle having the mass of an electron and the charge of a proton is called a______________?

   A. Antiproton
   B. Positron
   C. Gamma rays
   D. Photon

6. Wavelength of X-rays falling at glancing angle of 30? on a crystal with atmic spacing 2 x 10-10 for the fist order diffraction is________________?

   A. 4 x 10-10 m
   B. 2 x 10-10 m
   C. 0.02×10-10m
   D. 20×10-10m

7. The angular position of cells remains the same for a sample of a crystal. This property is called___________________?

   A. Isotropy
   B. Cleavage
   C. Homogeneity
   D. The external symmetry of form

8. If the density of atoms remain same along any direction in a crystal is called__________________?

   A. Symmetry
   B. Homogeneity
   C. Isotropy
   D. Cleavage

9. To obtain an n-type semiconductor germanium crystal it must be doped with foreign atoms whose valency is_____________?

   A. 2
   B. 3
   C. 4
   D. 5

10. To obtain a p-type semi-conductor Si Crystal must be doped with foreign atoms whose valency is_____________?

    A. 2
    B. 3
    C. 4
    D. 5