Dipankar Deb Asked a Question
September 30, 2020 5:22 pmpts 30 pts
Consider two waves y, = a cos(ot - kz) and y, a cos[(o + Ao)t - (k + Ak)z]. The group velocity of the superposed wave will be (Ao << o and Ak << k (-A0) (A) (B) (20+) k-Ak) (2k Ak) (C) (D) (+A Ao) (k Ak)
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  • Dinesh vishwakarma thankyou
    delta w/delta k
    • cropped6025102893485938517.jpg
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  • Abhisek
    is it correct ?
    • cropped198228797820874584.jpg
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