Chapter 27 – Wave Optics
In Young’s double-slit experiment the separation between two coherent sources S1 and S2 is d and the distance between the source and screen is D. In the interference pattern, it is found that exactly in front of one slit, there occurs a minimum. Then the possible wavelengths used in the experiment are
06
Dec
In Young’s double-slit experiment the separation between two coherent sources S1 and S2 is d and the distance between the source and screen is D. In the interference pattern, it is found that exactly in front of one slit, there occurs a minimum. Then the possible wavelengths used in the experiment are In Young's double-slit [...]
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In Young's double-slit experiment the separation between two coherent sources S1 and S2 is d and the distance between the source and screen is D. In the interference pattern ,
it is found that exactly in front of one slit ,
there occurs a minimum. Then the possible wavelengths used in the experiment are ,
Statement I: In YDSE, if separation between the slits is less than wavelength of light, then no interference pattern can be observed. Statement II: For interference pattern to be observed, light sources have to be coherent.
15
Nov
Statement I: In YDSE, if separation between the slits is less than wavelength of light, then no interference pattern can be observed. Statement II: For interference pattern to be observed, light sources have to be coherent. if separation between the slits is less than wavelength of light light sources have to be coherent. Statement I: [...]
Assertion STATEMENT-1 : For the situation shown in the figure two monochromatic identical coherent light sources produce interference pattern on the screen. The intensity of minima nearest to S1 is not exactly zero. Reason STATEMENT-2 : Minimum intensity is zero when interfering waves have same intensity at the location of super position.
15
Nov
Assertion STATEMENT-1 : For the situation shown in the figure two monochromatic identical coherent light sources produce interference pattern on the screen. The intensity of minima nearest to S1 is not exactly zero. Reason STATEMENT-2 : Minimum intensity is zero when interfering waves have same intensity at the location of super position. In Young's double [...]
Statement I: Two coherent point sources of light having no-zero phase difference are separated by a small distance. Then, on the perpendicular bisector of line segment joining both the point sources, constructive interference cannot be obtained. Statement II: For two waves from coherent point sources to interfere constructively at a point, the magnitude of their phase difference at that point must be 2mπ (where m is non-negative integer).
15
Nov
Statement I: Two coherent point sources of light having no-zero phase difference are separated by a small distance. Then, on the perpendicular bisector of line segment joining both the point sources, constructive interference cannot be obtained. Statement II: For two waves from coherent point sources to interfere constructively at a point, the magnitude of their [...]
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constructive interference cannot be obtained. Statement II: For two waves from coherent point sources to interfere constructively at a point ,
on the perpendicular bisector of line segment joining both the point sources ,
Statement I: Two coherent point sources of light having no-zero phase difference are separated by a small distance. Then ,
the magnitude of their phase difference at that point must be 2mπ (where m is non-negative integer). ,
Statement I: Two point coherent sources of light S1 and S2 are placed on a line as shown in figure. P and Q are two points on that line. If at point P maximum intensity is observed, then maximum intensity should also be observed at Q. Statement II: In figure the distance |S1P−S2P| is equal to distance |S1Q−S2Q|.
15
Nov
Statement I: Two point coherent sources of light S1 and S2 are placed on a line as shown in figure. P and Q are two points on that line. If at point P maximum intensity is observed, then maximum intensity should also be observed at Q. Statement II: In figure the distance |S1P−S2P| is equal [...]
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Statement I: Two point coherent sources of light S1 and S2 are placed on a line as shown in figure. P and Q are two points on that line. If at point P maximum intensity is observed ,
then maximum intensity should also be observed at Q. Statement II: In figure the distance |S1P−S2P| is equal to distance |S1Q−S2Q|. ,
The wavefront of a light beam is given by the equation x+2y+3x=c,(where c is arbitrary constant) the angle made by the direction of light with the y-axis is:
15
Nov
The wavefront of a light beam is given by the equation x+2y+3x=c,(where c is arbitrary constant) the angle made by the direction of light with the y-axis is: (where c is arbitrary constant) the angle made by the direction of light with the y-axis is: The wavefront of a light beam is given by the [...]
Light from a sources emitting two wavelengths λ1 and λ2 is allowed to fall on Young’s double-slit apparatus after filtering one of the wavelengths. The position of interference maxima is noted. When the filter is removed both the wavelengths are incident and it is found that maximum intensity is produced where the fourth maxima occured previously. If the other wavelength if filtered, at the same location the third maxima is found. What is the ratio of wavelength?
15
Nov
Light from a sources emitting two wavelengths λ1 and λ2 is allowed to fall on Young’s double-slit apparatus after filtering one of the wavelengths. The position of interference maxima is noted. When the filter is removed both the wavelengths are incident and it is found that maximum intensity is produced where the fourth maxima occured [...]
In Young’s double slit experiment the slits are 0.5 mm apart and the interference is observed on a screen at a distance of 100 cm from the slit. It is found that the 9th bright fringe is at a distance of 7.5mm from the second dark fringe from the centre of the fringe pattern. The wavelength of the light used is
15
Nov
In Young’s double slit experiment the slits are 0.5 mm apart and the interference is observed on a screen at a distance of 100 cm from the slit. It is found that the 9th bright fringe is at a distance of 7.5mm from the second dark fringe from the centre of the fringe pattern. The [...]
In YDSE, find the thickness of glass slab (μ=1.5) which should be placed before the upper slit S1 so that the central maximum now lies at a point where 5th bright fringe was lying earlier (before inserting the slab). Wavelength of light used is 5000 A˚.
15
Nov
In YDSE, find the thickness of glass slab (μ=1.5) which should be placed before the upper slit S1 so that the central maximum now lies at a point where 5th bright fringe was lying earlier (before inserting the slab). Wavelength of light used is 5000 A˚. In YDSE In Young's double slit experiment the wavelength [...]
In Young’s double-slit experiment, the angular width of a fringe formed on a distant screen is 1^o. The wavelength of light used is 6000 A˚. What is the spacing between the slits?
15
Nov
In Young’s double-slit experiment, the angular width of a fringe formed on a distant screen is 1^o. The wavelength of light used is 6000 A˚. What is the spacing between the slits? In Young's double slit experiment the angular width of a fringe formed on a distant screen is 1^o. The wavelength of light used [...]