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Sundaram mishra Asked a Question
April 27, 2020 9:15 pmpts 1 pts
3. The phase speed V, of light in a certain wavelength range in a medium is given by the following expression , A Here A is the wavelength, C is speed of light, and A and B are constants. (a) Find an expression of the group speed in terms of wave vector k. (b) Taking A - 1.7 and B- um), calculate the group and phase speed of light for a wavelength of 400 nm. Which of the two speeds is physically important and why? 0.01 47
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  • Sundaram mishra
    thank you 😊
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  • Sundaram mishra
    thank you😊
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  • Ruby negi Best Answer
    i derived, hope you will get solution by putting values ....
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  • Sundaram mishra
    please give me solutions
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