Doppler shifted hydrogen absorption lines are seen in the spectrum of a star. The hydrogen line at 656.28 nm is seen to be shifted to 656.08 nm. How large is the shift in wavelength

0.2 nm

Explanation:

When an object and observer are moving towards each other, the wavelength of light between them reduces.

When an object and observer are moving away from each other, the wavelength of light between them increases.

Here the wavelength has reduced so the objects are moving towards each other.

The shift in the wavelength is

are there answer choices to this question? this seems like a question where you have options to choose from.

the earths atmosphere is made up of nitrogen and oxygen. solids can turn into gasses through a process called sublimation. sublimation is the transition of a substance directly from the solid to the gas phase, without passing through the intermediate liquid phase.

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