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and 
are plane mirrors and kept parallel to each other. At point O there will be a maxima for wavelength 
. Light from monochromatic source S of wavelength is not reaching directly on the screen. Then is : 
The correct answer is:
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In the figure shown in a YDSE, a parallel beam of light is incident on the slits from a medium of refractive index 
. The wavelength of light in this medium is 
. A transparent slab of thickness 't' and refractive index 
is put in front of one slit. The medium between the screen and the plane of the slits is 
. The phase difference between the light waves reaching point O (Symmetrical , relative to the slits) is :
In the figure shown in a YDSE, a parallel beam of light is incident on the slits from a medium of refractive index . The wavelength of light in this medium is . A transparent slab of thickness 't' and refractive index is put in front of one slit. The medium between the screen and the plane of the slits is . The phase difference between the light waves reaching point O (Symmetrical , relative to the slits) is :
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physics-
In the figure shown if a parallel beam of white light is incident on the plane of the slits then the distance of the nearest white spot on the screen from O is : [assume 
]
In the figure shown if a parallel beam of white light is incident on the plane of the slits then the distance of the nearest white spot on the screen from O is : [assume ]
physics-General
physics-
As shown in arrangement waves with identical wavelengths and amplitudes and that are initially in phase travel through different media, Ray 1 travels through air and Ray 2 through a transparent medium for equal length L, in four different situations. In each situation the two rays reach a common point on the screen. The number of wavelengths in length L is 
for Ray 2 and 
for Ray 1. In the following table, values of and are given for all four situations, The order of the situations according to the intensity of the light at the common point in descending order is :
As shown in arrangement waves with identical wavelengths and amplitudes and that are initially in phase travel through different media, Ray 1 travels through air and Ray 2 through a transparent medium for equal length L, in four different situations. In each situation the two rays reach a common point on the screen. The number of wavelengths in length L is for Ray 2 and for Ray 1. In the following table, values of and are given for all four situations, The order of the situations according to the intensity of the light at the common point in descending order is :
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physics-
In the YDSE shown the two slits are covered with thin sheets having thickness t & 2t and refractive index 2
and . Find the position (y) of central maxima
In the YDSE shown the two slits are covered with thin sheets having thickness t & 2t and refractive index 2and . Find the position (y) of central maxima
physics-General
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Two point source separated by d = 5 mm emit light of wavelength 
in phase. A circular wire of radius 20 mm is placed around the source as shown in figure.
Two point source separated by d = 5 mm emit light of wavelength in phase. A circular wire of radius 20 mm is placed around the source as shown in figure.
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physics-
Two coherent narrow slits emitting light of wavelength in the same phase are placed parallel to each other at a small separation of 3. The light is collected on a screen S which is placed at a distance D (>>) from the slits. The smallest distance x such that the P is a maxima.
Two coherent narrow slits emitting light of wavelength in the same phase are placed parallel to each other at a small separation of 3. The light is collected on a screen S which is placed at a distance D (>>) from the slits. The smallest distance x such that the P is a maxima.
physics-General
physics-
A ray of light is incident on a thin film. As shown in figure M, N are two reflected rays and P, Q are two transmitted rays, Rays N and Q undergo a phase change of 
. Correct ordering of the refracting indices is :
A ray of light is incident on a thin film. As shown in figure M, N are two reflected rays and P, Q are two transmitted rays, Rays N and Q undergo a phase change of . Correct ordering of the refracting indices is :
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In YDSE, the source placed symmetrically with respect to the slit is now moved parallel to the plane of the slits it is closer to the upper slit, as shown. Then ,
In YDSE, the source placed symmetrically with respect to the slit is now moved parallel to the plane of the slits it is closer to the upper slit, as shown. Then ,
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In the circuit shown in the figure, the value of Resistance X, when potential difference between the points B and D is zero will be
In the circuit shown in the figure, the value of Resistance X, when potential difference between the points B and D is zero will be
physics-General
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The value of E of the given circuit is
The value of E of the given circuit is
physics-General
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The resistance between A and B is
The resistance between A and B is
physics-General
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The resistance between A and B is
The resistance between A and B is
physics-General
physics-
The potential difference between A & B in the given branch of a circuit is
The potential difference between A & B in the given branch of a circuit is
physics-General
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In the given circuit current through the galvanometer is
In the given circuit current through the galvanometer is
physics-General
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Six resistors of each 2 ohm are connected as shown in the figure The resultant resistance between A and B is
Six resistors of each 2 ohm are connected as shown in the figure The resultant resistance between A and B is
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