Recent questions tagged wave-optics

In a single slit experiment a wave of wavelength $0.2 \;cm$ is incident normally on a slit of width $0.004\;m$ . What is the semi angular width of the central maxima.

asked Jan 23, 2014 by meena.p

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The first diffraction minima due to a single diffraction is at $30^{\circ}$ for a light of wave length $5000A^{\circ}$ the width of slit is

asked Jan 23, 2014 by meena.p

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In Young's double slit experiment if width of slit is made 3 folds, the fringe width becomes

asked Jan 23, 2014 by meena.p

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The contrast in the dark and bright fringes in any interference pattern depends on

asked Jan 23, 2014 by meena.p

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Light is incident normally on a diffraction grating through first order diffraction is seen at $32^{\circ}$ second order diffraction will be seen at

asked Jan 22, 2014 by meena.p

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A beam of light strikes a pieces of glass at an angle of incidence of $60^{\circ}$ and the reflected beam is completely plane polarized . The refractive index of glass is

asked Jan 22, 2014 by meena.p

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A Young's double slit experiment is done in air and the same set up is immersed in a liquid of refractive index $\mu$. It is found that the 10th bright fringe in liquid was in the same position as 6th dark fringe in air . The value of $\mu$ is

asked Jan 22, 2014 by meena.p

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In an young double slit experiment the slit separation is 3 times the wave length of the light used What is the maximum number of interference maxima possible

asked Jan 22, 2014 by meena.p

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Two light waves whose equation are given respectively as $y_1 = 6\sin wt; y_2 =8 \sin (wt+ 8)$ super impose to form a interference pattern. The ratio of maximum to minimum intensities of the super imposed wave is

asked Jan 21, 2014 by meena.p

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Parallel beam of monochromatic light of wavelength $\lambda =4800 \mathring{A}$ is incident on a single slit of size $0.2 mm$ . The angular divergence in which most of light is diffracted is [ie between two 1st order maxima on both sides]

asked Jan 21, 2014 by meena.p

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In Fresnel bi prism experiment if prism angle $\alpha=1^{\circ}, \mu=1.54$ distance between prism and sources a is $0.3\;m$ and wave length $ \lambda= 180 \pi \;nm$ find the fringe width, distance between screen and prism $b= 0.7 \;m$

asked Jan 21, 2014 by meena.p

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In a young's double slit experiment two films of same thickness 't' but of different refractive indices $\mu_1$ and $\mu_2$ are placed in front of slit A and B respectively. If $( \mu_1 > \mu_2)$ the central maxima will

asked Jan 21, 2014 by meena.p

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An interference pattern is obtained by using red light. If in the same set up red light is replaced by blue light the fringe width will

asked Jan 21, 2014 by meena.p

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A young's double slit experiment uses light of wavelength $900\; nm$ A plate of thickness 't' of material of refractive index $\mu=1.5$ i placed in front of one of the slits. What should be the thickness of plate 't' so that the central fringe becomes dark.

asked Jan 21, 2014 by meena.p

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As a result of interference of two coherent source of light , the energy is :

asked Jan 21, 2014 by meena.p

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Two light sources emit light of same wavelength $\lambda$. They will form interfering patterns if

asked Jan 21, 2014 by meena.p

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If a light beam is incident at polarising angle, $(55.3^{\circ})$ on glass air interface , What is angle of refraction in glass?

asked Jan 21, 2014 by meena.p

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In a Young's double slit experiment set up the 10th maxima is 3 cm from the central maxima . If the whole set up is immersed in a liquid of refractive index $\mu=1.5$ What will be the new fring width

asked Jan 21, 2014 by meena.p

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In same Young's Double slit experiment set up two sources of light produces fringes of width $0.2 \;mm$ and $0.3 \;mm$ The ratio of wave length of two light sources is

asked Jan 21, 2014 by meena.p

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Monochromatic light from narrow slits produce a interference pattern of fridge width $\beta$ , for a certain slit separation. When the slit separation is doubled and distance between screen and slit distance between screen and slit is made $\large\frac{1}{3}$ rd the fringe width

asked Jan 21, 2014 by meena.p

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In a Young's double slit experiment separation between two consecutive dark. fringes is $1.2 \;mm$, wave length $\lambda$ of light is $600 \;nm$ Distance between source and screen $D= 1 m $, the separation between slits is

asked Jan 21, 2014 by meena.p

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Two coherent sources hence intensities in the ratio $81 : 4$. The ratio $I_{max} \;and\; I_{min}$ of the interfering light is

asked Jan 20, 2014 by meena.p

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