367750
Two light sources are said to be coherent if they are obtained from
1 two independent point sources emitting light of the same wavelength
2 a single point source
3 a wide source
4 two ordinary bulbs emitting light of different wavelengths
Explanation:
Two light sources are said to be coherent if they have same wavelength, same frequency and a constant phase difference.
PHXII10:WAVE OPTICS
367751
Two sources of waves are called coherent if
1 Both produce waves of the same wavelength
2 Both have constant phase difference
3 Both have the same amplitude of vibrations
4 Both produce wave having the same velocity
Explanation:
Two coherent sources must have a constant phase difference otherwise they cannot produce interference.
PHXII10:WAVE OPTICS
367752
Two coherent sources of light can be obtained by
1 Two different lamps but of the same power
2 Two different lamps
3 Two different lamps of same power and having the same colour
4 None of the above
Explanation:
The coherent source cannot be obtained from two different light sources. They can be obtained from a single monochromatic source.
PHXII10:WAVE OPTICS
367753
The conditions for producing sustained interference are I. Phase difference between interferring waves remains constant with time. II. interferring waves are of same frequency. III. interferring waves are moving in opposite directions.
1 I and II
2 II and III
3 I and III
4 I, II and III
Explanation:
When interferring sources have same frequency and their phase difference remains constant with time, interference is sustained (stayed for a finite time interval). So Option (1) is correct.
PHXII10:WAVE OPTICS
367754
Laser beams are used to measure long distance because
1 They are coherent
2 They are monochromatic
3 They have high degree of parallelism
4 They are highly polarised
Explanation:
Laser beams are perfectly parallel. So that they are very narrow and can travel a long distance without spreading.
367750
Two light sources are said to be coherent if they are obtained from
1 two independent point sources emitting light of the same wavelength
2 a single point source
3 a wide source
4 two ordinary bulbs emitting light of different wavelengths
Explanation:
Two light sources are said to be coherent if they have same wavelength, same frequency and a constant phase difference.
PHXII10:WAVE OPTICS
367751
Two sources of waves are called coherent if
1 Both produce waves of the same wavelength
2 Both have constant phase difference
3 Both have the same amplitude of vibrations
4 Both produce wave having the same velocity
Explanation:
Two coherent sources must have a constant phase difference otherwise they cannot produce interference.
PHXII10:WAVE OPTICS
367752
Two coherent sources of light can be obtained by
1 Two different lamps but of the same power
2 Two different lamps
3 Two different lamps of same power and having the same colour
4 None of the above
Explanation:
The coherent source cannot be obtained from two different light sources. They can be obtained from a single monochromatic source.
PHXII10:WAVE OPTICS
367753
The conditions for producing sustained interference are I. Phase difference between interferring waves remains constant with time. II. interferring waves are of same frequency. III. interferring waves are moving in opposite directions.
1 I and II
2 II and III
3 I and III
4 I, II and III
Explanation:
When interferring sources have same frequency and their phase difference remains constant with time, interference is sustained (stayed for a finite time interval). So Option (1) is correct.
PHXII10:WAVE OPTICS
367754
Laser beams are used to measure long distance because
1 They are coherent
2 They are monochromatic
3 They have high degree of parallelism
4 They are highly polarised
Explanation:
Laser beams are perfectly parallel. So that they are very narrow and can travel a long distance without spreading.
367750
Two light sources are said to be coherent if they are obtained from
1 two independent point sources emitting light of the same wavelength
2 a single point source
3 a wide source
4 two ordinary bulbs emitting light of different wavelengths
Explanation:
Two light sources are said to be coherent if they have same wavelength, same frequency and a constant phase difference.
PHXII10:WAVE OPTICS
367751
Two sources of waves are called coherent if
1 Both produce waves of the same wavelength
2 Both have constant phase difference
3 Both have the same amplitude of vibrations
4 Both produce wave having the same velocity
Explanation:
Two coherent sources must have a constant phase difference otherwise they cannot produce interference.
PHXII10:WAVE OPTICS
367752
Two coherent sources of light can be obtained by
1 Two different lamps but of the same power
2 Two different lamps
3 Two different lamps of same power and having the same colour
4 None of the above
Explanation:
The coherent source cannot be obtained from two different light sources. They can be obtained from a single monochromatic source.
PHXII10:WAVE OPTICS
367753
The conditions for producing sustained interference are I. Phase difference between interferring waves remains constant with time. II. interferring waves are of same frequency. III. interferring waves are moving in opposite directions.
1 I and II
2 II and III
3 I and III
4 I, II and III
Explanation:
When interferring sources have same frequency and their phase difference remains constant with time, interference is sustained (stayed for a finite time interval). So Option (1) is correct.
PHXII10:WAVE OPTICS
367754
Laser beams are used to measure long distance because
1 They are coherent
2 They are monochromatic
3 They have high degree of parallelism
4 They are highly polarised
Explanation:
Laser beams are perfectly parallel. So that they are very narrow and can travel a long distance without spreading.
367750
Two light sources are said to be coherent if they are obtained from
1 two independent point sources emitting light of the same wavelength
2 a single point source
3 a wide source
4 two ordinary bulbs emitting light of different wavelengths
Explanation:
Two light sources are said to be coherent if they have same wavelength, same frequency and a constant phase difference.
PHXII10:WAVE OPTICS
367751
Two sources of waves are called coherent if
1 Both produce waves of the same wavelength
2 Both have constant phase difference
3 Both have the same amplitude of vibrations
4 Both produce wave having the same velocity
Explanation:
Two coherent sources must have a constant phase difference otherwise they cannot produce interference.
PHXII10:WAVE OPTICS
367752
Two coherent sources of light can be obtained by
1 Two different lamps but of the same power
2 Two different lamps
3 Two different lamps of same power and having the same colour
4 None of the above
Explanation:
The coherent source cannot be obtained from two different light sources. They can be obtained from a single monochromatic source.
PHXII10:WAVE OPTICS
367753
The conditions for producing sustained interference are I. Phase difference between interferring waves remains constant with time. II. interferring waves are of same frequency. III. interferring waves are moving in opposite directions.
1 I and II
2 II and III
3 I and III
4 I, II and III
Explanation:
When interferring sources have same frequency and their phase difference remains constant with time, interference is sustained (stayed for a finite time interval). So Option (1) is correct.
PHXII10:WAVE OPTICS
367754
Laser beams are used to measure long distance because
1 They are coherent
2 They are monochromatic
3 They have high degree of parallelism
4 They are highly polarised
Explanation:
Laser beams are perfectly parallel. So that they are very narrow and can travel a long distance without spreading.
367750
Two light sources are said to be coherent if they are obtained from
1 two independent point sources emitting light of the same wavelength
2 a single point source
3 a wide source
4 two ordinary bulbs emitting light of different wavelengths
Explanation:
Two light sources are said to be coherent if they have same wavelength, same frequency and a constant phase difference.
PHXII10:WAVE OPTICS
367751
Two sources of waves are called coherent if
1 Both produce waves of the same wavelength
2 Both have constant phase difference
3 Both have the same amplitude of vibrations
4 Both produce wave having the same velocity
Explanation:
Two coherent sources must have a constant phase difference otherwise they cannot produce interference.
PHXII10:WAVE OPTICS
367752
Two coherent sources of light can be obtained by
1 Two different lamps but of the same power
2 Two different lamps
3 Two different lamps of same power and having the same colour
4 None of the above
Explanation:
The coherent source cannot be obtained from two different light sources. They can be obtained from a single monochromatic source.
PHXII10:WAVE OPTICS
367753
The conditions for producing sustained interference are I. Phase difference between interferring waves remains constant with time. II. interferring waves are of same frequency. III. interferring waves are moving in opposite directions.
1 I and II
2 II and III
3 I and III
4 I, II and III
Explanation:
When interferring sources have same frequency and their phase difference remains constant with time, interference is sustained (stayed for a finite time interval). So Option (1) is correct.
PHXII10:WAVE OPTICS
367754
Laser beams are used to measure long distance because
1 They are coherent
2 They are monochromatic
3 They have high degree of parallelism
4 They are highly polarised
Explanation:
Laser beams are perfectly parallel. So that they are very narrow and can travel a long distance without spreading.
