Wave Optics Tes...

Young's double slit experiment is made in a liquid. The $$10^{th} $$ bright fringe in liquid lies where $$6^{th}$$ dark fringe lies in vacuum. The refractive index of the liquid is approximately  

Find the half angular width of the central bright maximum in the Fraunhofer diffraction pattern of a slit of width $$12\times { 10 }^{ 5 }cm$$ when the slit is illuminated by monochromatic light of wavelength 6000$$\mathring { A } \quad $$.

Unpolarized light of intensity $$32{\text{W}}{{\text{m}}^{{\text{ - 2}}}}$$ passes through three polarizers such that the transmission axis of the last polarizer is crossed with the first. If the intensity of the emerging light is $$3{\text{W}}{{\text{m}}^{{\text{ - 2}}}}$$, what is the angle between the  axes of the first two polarized is.

A ray of light incident mutually on an isosceles right angled prism travels as shown in the figure. The least value of the refractive index of the prison must be 

In a Young's double slit experiment using red and blue lights of wavelengths $$600\ mm$$ and $$480\ nm$$ respectively, the value of $$n$$ for which the $$n^{th}$$ red fringe coincides with $$(n + 1)^{th}$$ blue fringe is

The intensity of light from a source is 500 / $$\pi W/m^{2}$$. Find the amplitude of electric field in this wave -

A beam of light consisting of two wavelength $$650\ nm$$ and $$520\ nm$$ is used to illuminate the slit of a Young's double slit experiment. Then the order of the bright figure of the longer wavelength that coincide with a bright fringe of the shorter wavelength at the least distance from the central maximum is:-

In Young's double-slit experiment, the phase difference between the two waves reaching the location of the third dark fringe is

The intensity of the central fringes obtained in the interference pattern due to two identical slit source is $$I$$. When one of the slits is closed then the intensity at the same points is $$I_{0}$$. Then the correct relation ship between $$I$$ and $$I_{0}$$ is

$$\ln Y D S E , d = 2 \mathrm { mm } , D = 2 \mathrm { m }$$ and $$\lambda = 500 \mathrm { nm }$$ . If intensity of two slits are $$l _ { 0 }$$ and 9$$/ _ { 0 }$$ , then find intensity at $$y = \frac { 1 } { 6 } m m$$