Fresnel Biprism

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?

In biprism experiment, the eye piece is placed at a distance of $1.2 \mathrm{m}$ from the sources. The distance between the virtual sources was found to be $7.5\times {10}^{-4}\mathrm{m}.$ Find the wavelength of light if the eye-piece is to be moved transversely through a distance of $1.888\mathrm{cm}$ for $20$fringes.

A right-angled isosceles prism is held on the surface of a liquid composed of miscible solvents $A$ and $B$ of refractive index $n_{\mathrm{A}}=1.50$ and $n_B=1.30,$ respectively. The refractive index of prism is $n_p=1.5$ and that of the liquid is given by $nL$$=C_A{n}_A+\left(1-C_A\right)n_B,$ where $C_A$ is the percentage of solvent $A$ in the liquid:-

If ${\theta }_C$ is the critical angle at prism-liquid interface, the plot which best represents the variation of the critical angle with the percentage of solvent is:

In biprism experiment, the slit is illuminated by red light of wavelength $6400$$\stackrel{°}{\mathrm{A}}$ and the cross wire of eyepiece is adjusted to the centre of $3^{\text{rd }}$ bright band. By using blue light it is found that $4^{\text{th }}$ bright band is at the centre of the cross wire. Find the wavelength of blue light.

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?

In biprism experiment, the eye piece is placed at a distance of $1.2$ metre from the sources. The distance between the virtual sources was found to be $7.5\times {10}^{-4}\mathrm{m}.$ Find the wavelength of light if the eye-piece is to be moved transversely through a distance of $1.888\mathrm{cm}$ for $20$fringes.

Draw neat labelled ray diagrams to get magnified and diminished images of two virtual sources using convex lens in biprism experiment.

Draw a ray diagram showing position of virtual sources and region of interference in biprism experiment.

Describe biprism experiment to find the wavelength of monochromatic light. Draw the necessary ray diagrams.

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