Question

Neutral hydrogen atoms are moving along the axis of an evacuated tube with a speed of 2.0 × 106 ms-1 . A spectrometer is arranged to receive light emitted by these atoms in the direction of their forward motion. This light, if emitted from resting hydrogen atoms, would have a measured wavelength of 486.13 nm. Calculate the expected wavelength for light emitted from the approaching atoms, using the relativistic formula.

23 Jan 2025
Answer :
Word Count : 99
To solve this problem, we use the relativistic Doppler effect formula for light: \[ \lambda' = \lambda \sqrt{\frac{1 - v/c}{1 + v/c}} \] where: ______ _____ _____ _______ ____ __________ ____ ________ __________ ____.
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_____ ___ ________ _______ _______ ______ _________.
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