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An electron with speed v and a photon with speed c have the same de-Broglie wavelength.

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An electron with speed v and a photon with speed c have the same de-Broglie wavelength. If the kinetic energy and momentum of electron are Ee and Pe. and that of photon are Eph and Pph respectively. Which of the following is correct?

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Correct option is (B) \(\frac{E_e}{E_{ph}}=\frac {v}{2c}\)

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