Answer:
123.4994673cm
Explanation:
In Doppler effect of light, frequency-source and frequency-observed are related by.
[tex]f_o = f_s\beta[/tex] where [tex]$\beta = \frac{1}{\sqrt{1-\frac{v_s^2}{c^2} } } $[/tex]
And frequency is related to wavelength by. [tex]f = \frac{c}{L}[/tex] L is wavelength. and c is speed of light = 299792458m/s.
Now using this relationship, frequency source is = 242747976.5Hz.
and plugging this into f-source and f-observed relationship with V source = 880.500km/s = 880500m/s.
We get f observed is = 242747976.6Hz which when converted to wavelength gives L = 123.4994673cm.