Question
Download Solution PDFTwo sources of monochromatic light are said to be coherent, if light waves produced by them have the same:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFMonochromatic light:
1). Monochromatic light is light with a single frequency.
2). Two sources are said to be coherent if the waves emitted from them have the same frequency and constant phase difference.
3). Interference from such waves happen all the time, the randomly phased light waves constantly produce bright and dark fringes at every point.
4). A point that has a dark fringe at one moment may have a bright fringe at the next moment. This cancels out the effect of the interference effect, and we see only an average brightness value.
Coherent Source Example:
1). Laser light is an example of a coherent source of light. The light emitted by the laser light has the same frequency and phase.
2). Sound waves are another example of coherent sources. The electrical signals from the sound waves travel with the same frequency and phase.
Last updated on Jun 19, 2025
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