Question

A diffraction pattern is obtained using a beam of red light what happens if the red light is replaced by blue light?
1-No change
2-Diffraction bands become narrower and crowded together
3-Diffraction bands become broader and farther apart
4-bands disappear

Answer 1

Dear Student,

If the red light replaced by blue light then the diffraction band becomes narrower and crowded together because the diffraction band depends on the wavelength. Blue light has less wavelength than red light. Therefore, it becomes narrower and crowded together.

Regards