Young's Double Slit Experiment (YDSE)
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283354 In Young's double slit experiment, the fringe width is found to be \(0.4 \mathrm{~mm}\). If the whole apparatus is dipped in water of refractive index \(4 / 3\), without disturbing the arrangement, the new fringe width will be

1 \(0.30 \mathrm{~mm}\)
2 \(0.40 \mathrm{~mm}\)
3 \(0.53 \mathrm{~mm}\)
4 \(0.2 \mathrm{~mm}\)
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283355 In Young's double slit experiment the slits are horizontal. The intensity at a point ' \(P\) ' on the screen shown in the figure is \(\frac{I_0}{4}\) where \(I_0\) is maximum intensity. If the distance between the two slits \(S_1\) and \(S\), is \(2 \lambda\). then the value of ' \(\theta\) ' is

1 \(\cos ^{-1}\left(\frac{1}{6}\right)\)
2 \(\sin ^{-1}\left(\frac{1}{12}\right)\)
3 \(\tan ^{-1}\left(\frac{1}{6}\right)\)
4 \(\sin ^{-1}\left(\frac{3}{4}\right)\)
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283356 In Young's double slit experiment, intensity at a point on the screen is \(\frac{1}{4}\) th of the maximum intensity. Then the angular position of this point is \((\lambda\) - wavelength of light. \(d\) - separation between the two slits)

1 \(\sin ^{-1}\left(\frac{\lambda}{d}\right)\)
2 \(\sin ^{-1}\left(\frac{\lambda}{3 \mathrm{~d}}\right)\)
3 \(\sin ^{-1}\left(\frac{3 \lambda}{2 d}\right)\)
4 \(\tan ^{-1}\left(\frac{\lambda}{d}\right)\)
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283357 In Young's double slit experiment, the slits separated by \(0.6 \mathrm{~mm}\) are illuminated with light of \(6600 \AA\). Interference pattern is obtained on a screen placed at \(4 \mathrm{~m}\) from slits. The minimum distance from the central maximum at which the average intensity is \(\mathbf{5 0 \%}\) of the maximum value is

1 \(0.21 \mathrm{~mm}\)
2 \(2.1 \mathrm{~mm}\)
3 \(0.11 \mathrm{~mm}\)
4 \(1.1 \mathrm{~mm}\)
WAVE OPTICS

283354 In Young's double slit experiment, the fringe width is found to be \(0.4 \mathrm{~mm}\). If the whole apparatus is dipped in water of refractive index \(4 / 3\), without disturbing the arrangement, the new fringe width will be

1 \(0.30 \mathrm{~mm}\)
2 \(0.40 \mathrm{~mm}\)
3 \(0.53 \mathrm{~mm}\)
4 \(0.2 \mathrm{~mm}\)
WAVE OPTICS

283355 In Young's double slit experiment the slits are horizontal. The intensity at a point ' \(P\) ' on the screen shown in the figure is \(\frac{I_0}{4}\) where \(I_0\) is maximum intensity. If the distance between the two slits \(S_1\) and \(S\), is \(2 \lambda\). then the value of ' \(\theta\) ' is

1 \(\cos ^{-1}\left(\frac{1}{6}\right)\)
2 \(\sin ^{-1}\left(\frac{1}{12}\right)\)
3 \(\tan ^{-1}\left(\frac{1}{6}\right)\)
4 \(\sin ^{-1}\left(\frac{3}{4}\right)\)
WAVE OPTICS

283356 In Young's double slit experiment, intensity at a point on the screen is \(\frac{1}{4}\) th of the maximum intensity. Then the angular position of this point is \((\lambda\) - wavelength of light. \(d\) - separation between the two slits)

1 \(\sin ^{-1}\left(\frac{\lambda}{d}\right)\)
2 \(\sin ^{-1}\left(\frac{\lambda}{3 \mathrm{~d}}\right)\)
3 \(\sin ^{-1}\left(\frac{3 \lambda}{2 d}\right)\)
4 \(\tan ^{-1}\left(\frac{\lambda}{d}\right)\)
WAVE OPTICS

283357 In Young's double slit experiment, the slits separated by \(0.6 \mathrm{~mm}\) are illuminated with light of \(6600 \AA\). Interference pattern is obtained on a screen placed at \(4 \mathrm{~m}\) from slits. The minimum distance from the central maximum at which the average intensity is \(\mathbf{5 0 \%}\) of the maximum value is

1 \(0.21 \mathrm{~mm}\)
2 \(2.1 \mathrm{~mm}\)
3 \(0.11 \mathrm{~mm}\)
4 \(1.1 \mathrm{~mm}\)
WAVE OPTICS

283354 In Young's double slit experiment, the fringe width is found to be \(0.4 \mathrm{~mm}\). If the whole apparatus is dipped in water of refractive index \(4 / 3\), without disturbing the arrangement, the new fringe width will be

1 \(0.30 \mathrm{~mm}\)
2 \(0.40 \mathrm{~mm}\)
3 \(0.53 \mathrm{~mm}\)
4 \(0.2 \mathrm{~mm}\)
WAVE OPTICS

283355 In Young's double slit experiment the slits are horizontal. The intensity at a point ' \(P\) ' on the screen shown in the figure is \(\frac{I_0}{4}\) where \(I_0\) is maximum intensity. If the distance between the two slits \(S_1\) and \(S\), is \(2 \lambda\). then the value of ' \(\theta\) ' is

1 \(\cos ^{-1}\left(\frac{1}{6}\right)\)
2 \(\sin ^{-1}\left(\frac{1}{12}\right)\)
3 \(\tan ^{-1}\left(\frac{1}{6}\right)\)
4 \(\sin ^{-1}\left(\frac{3}{4}\right)\)
WAVE OPTICS

283356 In Young's double slit experiment, intensity at a point on the screen is \(\frac{1}{4}\) th of the maximum intensity. Then the angular position of this point is \((\lambda\) - wavelength of light. \(d\) - separation between the two slits)

1 \(\sin ^{-1}\left(\frac{\lambda}{d}\right)\)
2 \(\sin ^{-1}\left(\frac{\lambda}{3 \mathrm{~d}}\right)\)
3 \(\sin ^{-1}\left(\frac{3 \lambda}{2 d}\right)\)
4 \(\tan ^{-1}\left(\frac{\lambda}{d}\right)\)
WAVE OPTICS

283357 In Young's double slit experiment, the slits separated by \(0.6 \mathrm{~mm}\) are illuminated with light of \(6600 \AA\). Interference pattern is obtained on a screen placed at \(4 \mathrm{~m}\) from slits. The minimum distance from the central maximum at which the average intensity is \(\mathbf{5 0 \%}\) of the maximum value is

1 \(0.21 \mathrm{~mm}\)
2 \(2.1 \mathrm{~mm}\)
3 \(0.11 \mathrm{~mm}\)
4 \(1.1 \mathrm{~mm}\)
WAVE OPTICS

283354 In Young's double slit experiment, the fringe width is found to be \(0.4 \mathrm{~mm}\). If the whole apparatus is dipped in water of refractive index \(4 / 3\), without disturbing the arrangement, the new fringe width will be

1 \(0.30 \mathrm{~mm}\)
2 \(0.40 \mathrm{~mm}\)
3 \(0.53 \mathrm{~mm}\)
4 \(0.2 \mathrm{~mm}\)
WAVE OPTICS

283355 In Young's double slit experiment the slits are horizontal. The intensity at a point ' \(P\) ' on the screen shown in the figure is \(\frac{I_0}{4}\) where \(I_0\) is maximum intensity. If the distance between the two slits \(S_1\) and \(S\), is \(2 \lambda\). then the value of ' \(\theta\) ' is

1 \(\cos ^{-1}\left(\frac{1}{6}\right)\)
2 \(\sin ^{-1}\left(\frac{1}{12}\right)\)
3 \(\tan ^{-1}\left(\frac{1}{6}\right)\)
4 \(\sin ^{-1}\left(\frac{3}{4}\right)\)
WAVE OPTICS

283356 In Young's double slit experiment, intensity at a point on the screen is \(\frac{1}{4}\) th of the maximum intensity. Then the angular position of this point is \((\lambda\) - wavelength of light. \(d\) - separation between the two slits)

1 \(\sin ^{-1}\left(\frac{\lambda}{d}\right)\)
2 \(\sin ^{-1}\left(\frac{\lambda}{3 \mathrm{~d}}\right)\)
3 \(\sin ^{-1}\left(\frac{3 \lambda}{2 d}\right)\)
4 \(\tan ^{-1}\left(\frac{\lambda}{d}\right)\)
WAVE OPTICS

283357 In Young's double slit experiment, the slits separated by \(0.6 \mathrm{~mm}\) are illuminated with light of \(6600 \AA\). Interference pattern is obtained on a screen placed at \(4 \mathrm{~m}\) from slits. The minimum distance from the central maximum at which the average intensity is \(\mathbf{5 0 \%}\) of the maximum value is

1 \(0.21 \mathrm{~mm}\)
2 \(2.1 \mathrm{~mm}\)
3 \(0.11 \mathrm{~mm}\)
4 \(1.1 \mathrm{~mm}\)