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________________?

Related Mcqs:

Which one of the following properties of light does not change with the nature of the medium ?

A. velocity B. wavelength C. amplitude D. frequency...

In double slit experiment if one of the two slit is covered then________________?

A. no interference fringes are observed B. no diffraction fringes are observed C. no fringes observed D. interference pattern not disturbed...

In the shadow of a ball the central portion appears bright that happens due to_________________?

A. Interference B. Diffraction C. Polarization D. Refraction...

Which is not optically active ?

A. sugar B. tartaric acid C. water D. sodium chlorate...

A thing that emits its own light is___________________?

A. luminous B. non-luminous C. incandescent D. bright...