The wavelength of the wave of a hydrogen atom moving with a velocity of 4000 ms^{-1} is \lambda_1 If the velocity of the hydrogen atom is changed to 2000 ms^{-1}, the new wavelength \lambda_2 is equal to

TS EAMCET Medical 2018 May 3 Shift 1Paper

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The wavelength of the wave of a hydrogen atom moving with a velocity of 4000 ms−1 is λ1 If the velocity of the hydrogen atom is changed to 2000 ms−1, the new wavelength λ2 is equal to

0.25 λ1
0.5 λ1
2 λ1
4 λ1

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