GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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As a star moves away from us, the wavelength increases and the frequency decreases causing the star’s spectrum to shift
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Towards the red end of the spectrum
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Towards the blue end of the spectrum
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It doesn’t shift
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None of the above
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Explanation:
Detailed explanation-1: -The wavelength of light emitted by a moving object is shifted. This effect is called the doppler shift. If the object is coming toward you, the light is shifted toward shorter wavelengths, blue shifted . If the object is going away from you, the light is shifted toward longer wavelengths, red shifted .
Detailed explanation-2: -If the star is moving away from us, its waves are effectively stretched out when they reach Earth, increasing their wavelength. This shifts the star’s spectral lines toward the red end of the spectrum. And, The red end of the spectrum has a lower pitch or frequency.
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