NEET Test Series from KOTA - 10 Papers In MS WORD
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WAVE OPTICS
283273
Two waves are said to be coherent, if they have
1 same phase but different amplitude
2 same frequency but different amplitude
3 same frequency, phase and amplitude
4 different frequency, phase and amplitude
Explanation:
: Two waves are said to be coherent if they have same frequency, phase and amplitude.
J and K CET- 2008
WAVE OPTICS
283274
A point source emits sound equally in all directions in a non-absorbing medium. Two points \(P\) and \(Q\) are at distance of \(2 \mathrm{~m}\) and \(3 \mathrm{~m}\) respectively from the source. The ratio of the intensities of the waves at \(P\) and \(Q\) is
1 \(9: 4\)
2 \(2: 3\)
3 \(3: 2\)
4 \(4: 9\)
Explanation:
: From a distance source, the shape of wave front is approximately plane.
DCE-2007
WAVE OPTICS
283277
A light ray of wavelength \(\lambda\) is passing through a pin hole of diameter \(D\) and the effect is observed on a screen placed at a distance \(L\) from the pin hole. The approximations of geometrical optics are applicable if
1 \(\mathrm{D} \leq \lambda\)
2 \(\frac{\mathrm{L} \lambda}{\mathrm{D}^2}=1\)
3 \(\frac{\mathrm{L} \lambda}{\mathrm{D}^2}<<1\)
4 \(\frac{\mathrm{L} \lambda}{\mathrm{D}^2}>1\)
Explanation:
: The approximation of geometrical optics is applicable if \(\frac{\mathrm{L} \lambda}{\mathrm{D}^2}<<1\)
EAMCET-2005
WAVE OPTICS
283301
A yellow light source forms the interference pattern on the screen in the Young's double slit experiment. If it is replaced with green light source, then the fringe pattern
1 expands
2 contracts
3 disappears
4 remains the same
Explanation:
: Fringe width is given by, \(\beta=\frac{\lambda \mathrm{D}}{\mathrm{d}}\)If we replace yellow light with green light i.e. longer wave length with shorter one, then the fringe pattern contracts.
283273
Two waves are said to be coherent, if they have
1 same phase but different amplitude
2 same frequency but different amplitude
3 same frequency, phase and amplitude
4 different frequency, phase and amplitude
Explanation:
: Two waves are said to be coherent if they have same frequency, phase and amplitude.
J and K CET- 2008
WAVE OPTICS
283274
A point source emits sound equally in all directions in a non-absorbing medium. Two points \(P\) and \(Q\) are at distance of \(2 \mathrm{~m}\) and \(3 \mathrm{~m}\) respectively from the source. The ratio of the intensities of the waves at \(P\) and \(Q\) is
1 \(9: 4\)
2 \(2: 3\)
3 \(3: 2\)
4 \(4: 9\)
Explanation:
: From a distance source, the shape of wave front is approximately plane.
DCE-2007
WAVE OPTICS
283277
A light ray of wavelength \(\lambda\) is passing through a pin hole of diameter \(D\) and the effect is observed on a screen placed at a distance \(L\) from the pin hole. The approximations of geometrical optics are applicable if
1 \(\mathrm{D} \leq \lambda\)
2 \(\frac{\mathrm{L} \lambda}{\mathrm{D}^2}=1\)
3 \(\frac{\mathrm{L} \lambda}{\mathrm{D}^2}<<1\)
4 \(\frac{\mathrm{L} \lambda}{\mathrm{D}^2}>1\)
Explanation:
: The approximation of geometrical optics is applicable if \(\frac{\mathrm{L} \lambda}{\mathrm{D}^2}<<1\)
EAMCET-2005
WAVE OPTICS
283301
A yellow light source forms the interference pattern on the screen in the Young's double slit experiment. If it is replaced with green light source, then the fringe pattern
1 expands
2 contracts
3 disappears
4 remains the same
Explanation:
: Fringe width is given by, \(\beta=\frac{\lambda \mathrm{D}}{\mathrm{d}}\)If we replace yellow light with green light i.e. longer wave length with shorter one, then the fringe pattern contracts.
283273
Two waves are said to be coherent, if they have
1 same phase but different amplitude
2 same frequency but different amplitude
3 same frequency, phase and amplitude
4 different frequency, phase and amplitude
Explanation:
: Two waves are said to be coherent if they have same frequency, phase and amplitude.
J and K CET- 2008
WAVE OPTICS
283274
A point source emits sound equally in all directions in a non-absorbing medium. Two points \(P\) and \(Q\) are at distance of \(2 \mathrm{~m}\) and \(3 \mathrm{~m}\) respectively from the source. The ratio of the intensities of the waves at \(P\) and \(Q\) is
1 \(9: 4\)
2 \(2: 3\)
3 \(3: 2\)
4 \(4: 9\)
Explanation:
: From a distance source, the shape of wave front is approximately plane.
DCE-2007
WAVE OPTICS
283277
A light ray of wavelength \(\lambda\) is passing through a pin hole of diameter \(D\) and the effect is observed on a screen placed at a distance \(L\) from the pin hole. The approximations of geometrical optics are applicable if
1 \(\mathrm{D} \leq \lambda\)
2 \(\frac{\mathrm{L} \lambda}{\mathrm{D}^2}=1\)
3 \(\frac{\mathrm{L} \lambda}{\mathrm{D}^2}<<1\)
4 \(\frac{\mathrm{L} \lambda}{\mathrm{D}^2}>1\)
Explanation:
: The approximation of geometrical optics is applicable if \(\frac{\mathrm{L} \lambda}{\mathrm{D}^2}<<1\)
EAMCET-2005
WAVE OPTICS
283301
A yellow light source forms the interference pattern on the screen in the Young's double slit experiment. If it is replaced with green light source, then the fringe pattern
1 expands
2 contracts
3 disappears
4 remains the same
Explanation:
: Fringe width is given by, \(\beta=\frac{\lambda \mathrm{D}}{\mathrm{d}}\)If we replace yellow light with green light i.e. longer wave length with shorter one, then the fringe pattern contracts.
283273
Two waves are said to be coherent, if they have
1 same phase but different amplitude
2 same frequency but different amplitude
3 same frequency, phase and amplitude
4 different frequency, phase and amplitude
Explanation:
: Two waves are said to be coherent if they have same frequency, phase and amplitude.
J and K CET- 2008
WAVE OPTICS
283274
A point source emits sound equally in all directions in a non-absorbing medium. Two points \(P\) and \(Q\) are at distance of \(2 \mathrm{~m}\) and \(3 \mathrm{~m}\) respectively from the source. The ratio of the intensities of the waves at \(P\) and \(Q\) is
1 \(9: 4\)
2 \(2: 3\)
3 \(3: 2\)
4 \(4: 9\)
Explanation:
: From a distance source, the shape of wave front is approximately plane.
DCE-2007
WAVE OPTICS
283277
A light ray of wavelength \(\lambda\) is passing through a pin hole of diameter \(D\) and the effect is observed on a screen placed at a distance \(L\) from the pin hole. The approximations of geometrical optics are applicable if
1 \(\mathrm{D} \leq \lambda\)
2 \(\frac{\mathrm{L} \lambda}{\mathrm{D}^2}=1\)
3 \(\frac{\mathrm{L} \lambda}{\mathrm{D}^2}<<1\)
4 \(\frac{\mathrm{L} \lambda}{\mathrm{D}^2}>1\)
Explanation:
: The approximation of geometrical optics is applicable if \(\frac{\mathrm{L} \lambda}{\mathrm{D}^2}<<1\)
EAMCET-2005
WAVE OPTICS
283301
A yellow light source forms the interference pattern on the screen in the Young's double slit experiment. If it is replaced with green light source, then the fringe pattern
1 expands
2 contracts
3 disappears
4 remains the same
Explanation:
: Fringe width is given by, \(\beta=\frac{\lambda \mathrm{D}}{\mathrm{d}}\)If we replace yellow light with green light i.e. longer wave length with shorter one, then the fringe pattern contracts.
