What is a double prism? With its use, how to calculate the wavelength (lamda) of monochromatic light?

A wave of light of ____ wavelength is called monochromatic light.

In a Young's double slit experiment using monochromatic light, the fringe pattern shifts by a certain distance on the screen when a mica sheet of refractive index 1.6 and thickness 1.964 microns is introduced in the path of one of the interfering waves. The mica sheet is then removed and the distance between the slits and screen is doubled. It is found that the distance between successive maxima now is the same as observed fringe shift upon the introduced of the mica sheet . Calculate the wavelength of the monochromatic light used in the experiment .

The maximum intensity in Young's double slit experiment is I_(0) . Distance between the slits is d=2lamda , where lamda is the wavelength of monochromatic light used in experiment. What will be the intensity of light in front of one of the slits on a screen at a distance D=6d ?

What is the work function of a substance if photoelectrons are just ejected for a monochromatic light of wavelength lamda = 3300 Å (answer in eV) ?

In Young's double slit experiment, we get 10 fringes in the field of view of monochromatic light of wavelength 4000Å. If we use monochromatic light of wavelength 5000Å, then the number of fringes obtained in the same field of view is

(a) Why are coherent sources necessary to produce a sustained interference pattern ? (b) In Young's double slit experiment using monochromatic light of wavelength lamda , the intensity of light at a point on the screen where path difference is lamda , is K units. Find out the intensity of light at a point where path difference is lamda//3 .

In Young's double slit experiment, we get 60 fringes in the field of view of monochromatic light of wavelength 4000Å . If we use monochromatic light of wavelength 6000Å , then the number of fringes obtained in the same field of view is

In Young's double slit experiment using monochromatic light of wavelength lambda , the intensity of light at a point on the screen where path diff. is lambda is K units. Find the intensity of light at a point where path difference is lambda//3 .