A star, which is emitting radiation at a wavelength of 5000 
, is approaching the earth with a velocity ofl. 
. The change in wavelength of the radiation as received on the earth is
A
25 
B
100 A
C
zero
D
2.5 
Text Solution
Verified by ExpertsThe correct answer is:
A
Wavelength 
A and
velocity 
Wavelength of the approaching star, 
or 
or, 
Therefore 
A. (where 
is the change in the wavelength)
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