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प्रश्न
Two sources are called coherent if they produce waves ______________ .
पर्याय
of equal wavelength
of equal velocity
having same shape of wave front
having a constant phase difference
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उत्तर
having a constant phase difference
For light waves emitted by two sources of light to remain coherent, the initial phase difference between waves should remain constant in time. If the phase difference changes continuously or randomly with time, then the sources are incoherent.
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संबंधित प्रश्न
Two coherent sources of different intensities send waves which interfere. The ratio of maximum intensity to the minimum intensity is 25. The intensities of the sources are in the ratio ______.
Two coherent point sources S1 and S2, vibrating in phase, emit light of wavelength \[\lambda.\] The separation between the sources is \[2\lambda.\] Consider a line passing through S2 and perpendicular to the line S1 S2. What is the smallest distance from S2 where a minimum intensity occurs?
Two sources of light are coherent if they have ______.
Two source S1 and S2 of intensity I1 and I2 are placed in front of a screen [Figure (a)]. The pattern of intensity distribution seen in the central portion is given by Figure (b).
 (a) |
 (b) |
- S1 and S2 have the same intensities.
- S1 and S2 have a constant phase difference.
- S1 and S2 have the same phase.
- S1 and S2 have the same wavelength.
n identical waves each of intensity I0 interfere with each other. The ratio of maximum intensities if the interference is (i) coherent and (ii) incoherent is ______.
When two or more waves travel through the same medium at the same time, what is the resultant displacement?
Which sources are called coherent sources?
Which sources are called incoherent sources?
What occurs when two waves meet in the same phase?
What occurs when two waves meet in opposite phase?
What path difference produces constructive interference?
What path difference produces destructive interference?
How do the waves behave at points of destructive interference?
What is observed when two incoherent sources superpose?
For incoherent addition of waves, what is the average intensity at any point?
Why do independent light bulbs behave as incoherent sources?
