Fresnel Biprism and Lloyd's Mirror

Anti-reflecting coating makes use of 

In diffraction radius of half period zone is proportional to:

As we know few currency notes change their color as you tilt then to avoid counterfeits. This is because of ________ of light.

White light reflected from a soap film (Refractive index$=1.5$) has a maxima at $600\mathrm{nm}$ and a minima at $750\mathrm{nm}$ with no minimum in between. Then the thickness of the film is _______$\times {10}^{-7}\mathrm{m}$?

Discuss how path difference occurs in reflected light rays.

What is reflected interference?

Where does the light go in destructive interference?

Explain Biprism Experimental Arrangement with the help of a diagram.

Draw a neat labelled ray diagram of the Fresnel Biprism experiment showing the region of interference.

Describe fresnel biprism and the angle of biprism.

What are the important advantages of Lloyd's mirror over double slit interferometers?

What is destructive interference of light waves?

In the hyperbola the distance between the foci is equal to distance between one focus to one end of conjugate axis then its eccentricity

How do waves interact when there is constructive interference?

What is an example of constructive wave interference?

Is reflection a constructive interference?

If Fresnel's bi prism experiment as held in water in spite of air,  what will be the effect on the fringe width?

In Fresnel's Bi-prism on increasing the prism angle the fringe width will.

In a bi prism experiment, fringes were obtained with a monochromatic source of light. The eye-piece was kept at a distance of $1 \mathrm{m}$ from the slit and the bandwidth was measured. When another monochromatic source was used without disturbing the arrangement, the same bandwidth was obtained when the eye-piece was at $80 \mathrm{cm}$ From the slit. Calculate the ratio of wavelengths of light from two sources.

A biprism is placed $5\mathrm{cm}$ from slit illuminated by sodium light of wavelength $5890$$\stackrel{°}{\mathrm{A}}$. The width of the fringes obtained on a screen $75\mathrm{cm}$ from the biprism is $9.424\times {10}^{-2}\mathrm{cm}.$ What is the distance between two coherent sources?