GK
BIG BANG THEORY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What is on the y-axis in the Hubble’s Law graph?
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Recessional velocity
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Distance
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Hubble’s constant
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Proportionality constant
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Explanation:
Detailed explanation-1: -Hubble’s discovery, now known as Hubble’s law, can be written as e r, published a pap y = Hd Eq. (44.1) where y = recessional velocity of the galaxy d = distance of galaxy from the observer H = a constant called the Hubble constan The Hubble constant is believed to haveay parsecs.
Detailed explanation-2: -Recessional Velocity Formula To calculate the recessional velocity, multiply the Hubble constant by the proper distance, then add the peculiar velocity.
Detailed explanation-3: -Thus, we can determine the velocity of a galaxy from its spectrum: we simply measure the (shifted) wavelength of a known absorption line and solve the equation v = z * c.
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