NEET Test Series from KOTA - 10 Papers In MS WORD
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PHXII10:WAVE OPTICS
367759
Between two coherent sources, the phase difference is
1 \(\phi (x) = \,\,{\text{constant }}\)
2 \(\phi (t) = \,\,{\text{constant}}\)
3 \(\phi (x) = \phi (t) = \,\,{\text{constant}}\)
4 \(\phi (x) \ne \phi (t)\)
Explanation:
Two sources are said to be coherent, if they emit light waves of same frequency or wavelength and of a stable phase difference. \(i.e.{\mkern 1mu} {\mkern 1mu} \phi (x) = {\text{constant}}.\)
PHXII10:WAVE OPTICS
367760
Assertion : Interference obeys the law of conservation of energy. Reason : The energy is redistributed in case of interference.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
In interference there is redistribution of energy between maxima and minima ensures no creation or destruction of energy. So correct option is (1).
PHXII10:WAVE OPTICS
367761
When a drop of oil is spread on a water surface, it displays beautiful colours in day light because of
1 Reflection of light
2 Dispersion of light
3 Interference of light
4 Polarisation of light
Explanation:
Conceptual Question
PHXII10:WAVE OPTICS
367762
Assertion : Thin films such a soap bubble or a thin layer of oil on water show beautiful colours when illuminated by white light. Reason : Light reflected from the upper surface of the thin film due to the interference.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Colors in thin films result from interference of light waves reflected from upper and lower surfaces. For interference both \(\mathrm{A}\) and \(\mathrm{B}\) are needed ( \(\mathrm{A}\) is reflected at upper surface while \(B\) is from lower surface. So correct option is (3).
367759
Between two coherent sources, the phase difference is
1 \(\phi (x) = \,\,{\text{constant }}\)
2 \(\phi (t) = \,\,{\text{constant}}\)
3 \(\phi (x) = \phi (t) = \,\,{\text{constant}}\)
4 \(\phi (x) \ne \phi (t)\)
Explanation:
Two sources are said to be coherent, if they emit light waves of same frequency or wavelength and of a stable phase difference. \(i.e.{\mkern 1mu} {\mkern 1mu} \phi (x) = {\text{constant}}.\)
PHXII10:WAVE OPTICS
367760
Assertion : Interference obeys the law of conservation of energy. Reason : The energy is redistributed in case of interference.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
In interference there is redistribution of energy between maxima and minima ensures no creation or destruction of energy. So correct option is (1).
PHXII10:WAVE OPTICS
367761
When a drop of oil is spread on a water surface, it displays beautiful colours in day light because of
1 Reflection of light
2 Dispersion of light
3 Interference of light
4 Polarisation of light
Explanation:
Conceptual Question
PHXII10:WAVE OPTICS
367762
Assertion : Thin films such a soap bubble or a thin layer of oil on water show beautiful colours when illuminated by white light. Reason : Light reflected from the upper surface of the thin film due to the interference.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Colors in thin films result from interference of light waves reflected from upper and lower surfaces. For interference both \(\mathrm{A}\) and \(\mathrm{B}\) are needed ( \(\mathrm{A}\) is reflected at upper surface while \(B\) is from lower surface. So correct option is (3).
367759
Between two coherent sources, the phase difference is
1 \(\phi (x) = \,\,{\text{constant }}\)
2 \(\phi (t) = \,\,{\text{constant}}\)
3 \(\phi (x) = \phi (t) = \,\,{\text{constant}}\)
4 \(\phi (x) \ne \phi (t)\)
Explanation:
Two sources are said to be coherent, if they emit light waves of same frequency or wavelength and of a stable phase difference. \(i.e.{\mkern 1mu} {\mkern 1mu} \phi (x) = {\text{constant}}.\)
PHXII10:WAVE OPTICS
367760
Assertion : Interference obeys the law of conservation of energy. Reason : The energy is redistributed in case of interference.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
In interference there is redistribution of energy between maxima and minima ensures no creation or destruction of energy. So correct option is (1).
PHXII10:WAVE OPTICS
367761
When a drop of oil is spread on a water surface, it displays beautiful colours in day light because of
1 Reflection of light
2 Dispersion of light
3 Interference of light
4 Polarisation of light
Explanation:
Conceptual Question
PHXII10:WAVE OPTICS
367762
Assertion : Thin films such a soap bubble or a thin layer of oil on water show beautiful colours when illuminated by white light. Reason : Light reflected from the upper surface of the thin film due to the interference.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Colors in thin films result from interference of light waves reflected from upper and lower surfaces. For interference both \(\mathrm{A}\) and \(\mathrm{B}\) are needed ( \(\mathrm{A}\) is reflected at upper surface while \(B\) is from lower surface. So correct option is (3).
367759
Between two coherent sources, the phase difference is
1 \(\phi (x) = \,\,{\text{constant }}\)
2 \(\phi (t) = \,\,{\text{constant}}\)
3 \(\phi (x) = \phi (t) = \,\,{\text{constant}}\)
4 \(\phi (x) \ne \phi (t)\)
Explanation:
Two sources are said to be coherent, if they emit light waves of same frequency or wavelength and of a stable phase difference. \(i.e.{\mkern 1mu} {\mkern 1mu} \phi (x) = {\text{constant}}.\)
PHXII10:WAVE OPTICS
367760
Assertion : Interference obeys the law of conservation of energy. Reason : The energy is redistributed in case of interference.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
In interference there is redistribution of energy between maxima and minima ensures no creation or destruction of energy. So correct option is (1).
PHXII10:WAVE OPTICS
367761
When a drop of oil is spread on a water surface, it displays beautiful colours in day light because of
1 Reflection of light
2 Dispersion of light
3 Interference of light
4 Polarisation of light
Explanation:
Conceptual Question
PHXII10:WAVE OPTICS
367762
Assertion : Thin films such a soap bubble or a thin layer of oil on water show beautiful colours when illuminated by white light. Reason : Light reflected from the upper surface of the thin film due to the interference.
1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Assertion is incorrect but reason is correct.
Explanation:
Colors in thin films result from interference of light waves reflected from upper and lower surfaces. For interference both \(\mathrm{A}\) and \(\mathrm{B}\) are needed ( \(\mathrm{A}\) is reflected at upper surface while \(B\) is from lower surface. So correct option is (3).
