GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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blue, red
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red, blue
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white, black
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black, white
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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: -A blueshift is any decrease in wavelength, with a corresponding increase in frequency, of an electromagnetic wave; the opposite effect is referred to asredshift. In visible light, this shifts the color from the red end of the spectrum to the blue end.
Detailed explanation-3: -Approximately 13.7 billion years ago, all the matter and energy in the universe were created in an enormous explosion known as the “Big Bang”. The universe expanded and cooled and is still doing so today-evidence Doppler Red-shift.