Fresnel Biprism

With a monochromatic light, the fringe width using a glass prism setup in air is $2 \mathrm{mm}$. Given ${}_a\mu _g=\frac{3}{2}, {}_a\mu _w=\frac{4}{3}$. The whole setup is immersed in water, then the new fringe width is

Estimate the distance for which ray optics is good approximation for an aperture of $5 \mathrm{mm}$ and wavelength $500 \mathrm{nm}$?

The refracting angle of bi-prism is :

Fresnel biprism a thin double prism placed base to base and have very small refracting angle of :

Which of the following is the correct expression to find screen distance in biprism?

Given  $\lambda$is the wavelength of the monochromatic light, D is the distance between the light sources and the screen and d is the distance between the two sources of light and $\beta$ being the fringe width.

The eccentricity of the hyperbola length of whose conjugate axis is equal to half of the distance between the foci is 

Find the equation of the hyperbola whose conjugate axis is 55 and the distance between the foci is 13.

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

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.

The wavelength of light used in a biprism experiment is $6000 \stackrel{o}{A}$ and $I_0$ is the intensity of central maximum. If distance between two slits is $0.25 \mathrm{cm}$ and the distance of the screen from slits is $120 \mathrm{cm}$ then at what distance (in $\mu \mathrm{m}$ ) from the central maxima, the intensity will be $\frac{{\mathrm{I}}_0}{2}?$ 

A lens inserted between the Fresnel biprism and eye-piece which are $1 \mathrm{m}$ apart gives two images of the slit in two positions. In first case, the images of the slit are $9\times {10}^{-3} \mathrm{m}$ and in the second position the images are $4\times {10}^{-3} \mathrm{m}$ apart. The distance between the interference fringes is found to be$1\times {10}^{-M} \mathrm{m}$ when sodium light of wavelength $6000\times {10}^{-10} \mathrm{m}$ is used. What is the value of $M?$(Take $\pi =3.14$ )

What will be the actual distance of separation in a Fresnel biprism experiment if it is given that two positions of lens give separation between the slits as $16 \mathrm{c}\mathrm{m}$ and $9 \mathrm{c}\mathrm{m}$ respectively?

In Fresnel's biprism experiment a mica sheet of refraction index 1.5 is placed in the path of one of the interfering beams. This results in shifting of central fringe through 5 fringe width. If wavelength of light used is $6000\mathrm{ }\mathrm{Å}$ , then thickness of the sheet will be

In a Biprism experiment, distance between sources and screen is 1.0 m. Fringes of width 5 mm are obtained when wavelength of light is $5000\mathrm{ }\mathrm{Å}$ . Separation of two coherent sources is

In a Fresnel biprism experiment, two positions of the lens give separation between the slits as 16 cm and 9 cm respectively. Actual distance of separation is

In a bi-prism experiment light of wavelength $5000\mathrm{ }\mathrm{Å}$ is being used. On a screen 1.0 m away from the coherent source, 5 mm wide fringes are observed. Then distance between two coherent sources is

In Fresnel's biprism experiment, the distance between biprism and screen is 4m. The angle of prism is $2\times {10}^{-3}$ radian the refractive index of glass of biprism is 1.5. The fringe width observed on the screen is $15\times {10}^{-4}\mathrm{ }\mathrm{m}$ . Find the number of fringes on the screen

The distance between the slits and the screen in a biprism experiment is $D$ and $d$ is separation between the two slits. For the two positions of a convex lens placed between the biprism and the screen, the separation between the images are $d_1$ and $d_2$ respectively. Then what is the value of  $\left(d_1-d_2\right)$ 
At first position lens is at u distance from source slit

 When monochromatic light is replaced by white light in Fresnel's biprism arrangement, the central fringe is