GK
THE UNIVERSE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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relatively cool in temperature
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moving away from us
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moving toward us
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a blue star
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Detailed explanation-1: -Redshift is an example of the Doppler Effect. As an object moves away from us, the sound or light waves emitted by the object are stretched out, which makes them have a lower pitch and moves them towards the red end of the electromagnetic spectrum, where light has a longer wavelength.
Detailed explanation-2: -The effect of the shifting lead to the splitting of the spectral lines. These spectral lines are related to the speed of rotation of the Sun. So, technically we can determine the rotation speed of the star using the Doppler effect by splitting spectral lines.
Detailed explanation-3: -Doppler shift This apparent change in wavelength can also be observed for the visible light emitted by stars or galaxies. So, if a star is moving towards Earth, it appears to emit light that is shorter in wavelength compared to a source of light that isn’t moving.