The de-Broglie wavelength of a free electron with kinetic energy ′E′ is λ. If the kinetic energy of the electron is doubled, the de-Broglie wavelength is:
A
λ√2
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B
√2λ
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C
λ2
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D
2λ
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Solution
The correct option is Aλ√2 Kinetic energy initially is given by: