A galaxy moves with respect to us so that sodium light of 589.0 nm is observed at 589.6 nm. The speed of the galaxy is :
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
B
: the relation between 
and 
are 
For small changes in 
and 
As 
There fore , using Doppler shift
Or 
Therefore , the galaxy is moving away from us
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