What is meant by interference of light? Write any two condition necessary for obtaining well defined and sustained interference pattern of light.
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When two light waves from different coherent sources meet together, then the distribution of energy due to one wave is disturbed by the other. This modification in the distribution of light energy due to super- position of two light waves is called "Interference of light". CONDITIONS FOR INTERFERENCE.
Necessary conditions for sustained interference fringes are: i) Two sources must be coherent. They should emit continuous light waves of same wavelength or frequency. ii) Two sources of light must be narrow
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