A star moves away from earth at speed 0.8 c while emitting light of fr – McqOptions

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1.	A star moves away from earth at speed 0.8 c while emitting light of frequency\[6\times {{10}^{14}}Hz\]. What frequency will be observed on the earth (in units of 1014 Hz) (c = speed of light) [MP PMT 1995]
A.	0.24
B.	1.2
C.	30
D.	3.3
Answer» C. 30

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