Question

1. What do you understand by coherent sources? How are the two coherent sources obtained?

Answer 1

Explanation:

What are coherent sources ? Two sources are said to be coherent when the waves emitted from them have the same frequency and constant phase difference. Interference from such waves happen all the time, the randomly phased light waves constantly produce bright and dark fringes at every point.

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Answer 2

What are coherent sources ? Two sources are said to be coherent when the waves emitted from them have the same frequency and constant phase difference. Interference from such waves happen all the time, the randomly phased light waves constantly produce bright and dark fringes at every point.

Examples of coherent sources: circle6 Sound waves from speakers driven by electrical signals that have the same frequency and a definite phase. circle6 Laser light. In a laser, all the atoms emit light with the same frequency and phase. This is a quantum effect that we'll study later in the course.

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