If the shift in a star light is towards red end, then [UP CPMT 2012]
If the shift in a star light is towards red end, then [UP CPMT 2012]
the star is approaching the earth
the star receding from the earth
the apparent frequency is lesser than actual
Both (b) and (c)
Solution
When the shift in star light is towards red end, wavelength increases and the apparent frequency is less than the actual. The star must be receding away from the earth.