A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to

  1. Home
  2. Back

Question:
A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to

1.500 mm

2.5 x 10-3 mm

3.2 x 10-5 mm

4.2 x 10-3 mm

Posted Date:-2021-08-29 22:44:23

More MCQS Questions and answers

  1. A closed surface contains two equal and opposite charges. The net electric flux from the surface will be
  2. A diffraction grating has 500 lines per mm. Its slit spacing or grating element will be equal to
  3. A hollow metallic sphere of 8cm diameter is charged with 4 x 10 8C. The potential on its surface will be
  4. A light ray traveling form rarer to denser medium suffers a phase change of
  5. A point source of light placed in a homogeneous medium gives rise to
  6. A thing that emits its own light is
  7. An electric charge at rest produces
  8. An electric field can deflect
  9. appearance of colour in thin films is due to
  10. Central spot of Newtons rings
  11. Crystals of a material can behave as
  12. Diffarction fringes are
  13. Diffraction effect is
  14. Electric charge of 100 ?C is 13cm apart from another charge 16.9?C electric force between them is
  15. Electric flux linked with a surface will be maximum when
  16. Electric force between two point charges in air or vacuum is F. If we replace air or vacuum by an insulator (dielectric) of relative permitivity Cr the force between the charges will
  17. Electric intensity being a vector quantity always points
  18. gives the definition of metre in terms of wavelength of red cadmium light
  19. If free space between the plates of a capacitor is replaced by a dielectric
  20. If the distance between the two point charges become half then force between them becomes
  21. In a plane polarized light
  22. In an interference pattern
  23. In double slit experiment if one of the two slit is covered then
  24. In Michelson interferometer to switch the fringe from bright to dark the mirror should be displaced through
  25. In monochromatic red light a blue book will probably appear to be
  26. In the shadow of a ball the central portion appears bright that happens due to
  27. In Young double slit experiment, if white light is used
  28. In Youngs double slit experiment the fringe spacing is equal to
  29. Light on passing through a Polaroid is
  30. The blue colour of the sky is due to
  31. The condition for constructive interference of two coherent beams is that the path difference should be
  32. The electric lines of force are
  33. The force per unit charge is know as
  34. The locus of all points in a medium having the same phase of vibration is called
  35. The metallic spheres A and B of radii 2m and 4m respectively carry the same charge 4 x 10 8C. If the spheres are connected by a copper wire
  36. The minimum charge on any object cannot be less than
  37. The velocity of light was determined accurately by
  38. The wavelengthe of X-rays is of the order of
  39. Tick the correct statement
  40. Tick the only wrong statement.
  41. Two charges are placed at a certain distance. If the magnitude of each charge is doubled the force will become
  42. Two similar charges each of one coulomb placed in air one meter apart repel each other with a force
  43. Two sources of light are coherent if they emit rays of
  44. 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
  45. When crest of one wave falls over the trough of the other wave this phenomenon is known as
  46. When one mirror of a Michelson Interferometer is moved a distance of 0.5 mm we observe 2000 fringes. What will be wavelength of light used?
  47. When we rub a glass rod with a silk cloth then
  48. Which experiment shows that wavelength of light is smaller than that of sound
  49. Which one of the following cannot be polarized?
  50. Which one of the following is nearly monochromatic light ?
Search
R4R Team
R4Rin Top Tutorials are Core Java,Hibernate ,Spring,Sturts.The content on R4R.in website is done by expert team not only with the help of books but along with the strong professional knowledge in all context like coding,designing, marketing,etc!