Sodium light of wavelength 5890A travelling from a galaxy is observed to be 5896A. What is the speed of the galaxy
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![The wavelength of the first spectral line of sodium is 5896 A. The first excitation potential of sodium atom will be (Planck's constant, h = 6.63 x 10- O 4.2 V 3.5 The wavelength of the first spectral line of sodium is 5896 A. The first excitation potential of sodium atom will be (Planck's constant, h = 6.63 x 10- O 4.2 V 3.5](https://toppr-doubts-media.s3.amazonaws.com/images/7647394/e8d20042-7c48-433b-8062-45f492231b42.jpg)
The wavelength of the first spectral line of sodium is 5896 A. The first excitation potential of sodium atom will be (Planck's constant, h = 6.63 x 10- O 4.2 V 3.5
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