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An electron & a photon have same energy ...

An electron & a photon have same energy E. Find the ratio of de Broglie wavelength of electron to wavelength of photon. Given mass of electron is m & speed of light is C

A

`c(2mE)^(1//2)`

B

`((E)/(2m))^(1//2)`

C

`(1)/(c)((E)/(2m))^(1//2)`

D

`(1)/(c)((2E)/(m))^(1//2)`

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