The velocity of a moving galaxy is 300 kms^−1 and the apparent change in wavelength of a spectral line emitted from the galaxy is observed as 0.5 nm. Then

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The velocity of a moving galaxy is 300 kms^−1 and the apparent change in wavelength of a spectral line emitted from the galaxy is observed as 0.5 nm. Then, the actual wavelength of the spectral line is
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Nov
The velocity of a moving galaxy is 300 kms^−1 and the apparent change in wavelength of a spectral line emitted from the galaxy is observed as 0.5 nm. Then, the actual wavelength of the spectral line is the actual wavelength of the spectral line is The velocity of a moving galaxy is 300 kms^−1 and [...]
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