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The wavelength of an electron moving in ...

The wavelength of an electron moving in the second orbit of H-atom is an integral multiple of its circumference. Calculate
speed of electron in the second orbit

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Circumference is `2 pi`. Wavelength is an intergral multiple of the circumference. Thus, `n lamda = 2 pi r`. Number of waves made by an electron in Bohr.s orbit is equal to the number of the orbit.
Number of waves (n) in the second orbit=2
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