The spectral line emitted by a star, known to have a wavelength of 6500 Å.What is the speed of the star in the line of sight relative to the earth ? Is the star approaching or receding ? Speed of light in air=3xx10^(8) ms^(-1).

The spectral line emitted by a star, known to have a wavelength of 650

1.	The spectral line emitted by a star, known to have a wavelength of 6500 Å.What is the speed of the star in the line of sight relative to the earth ? Is the star approaching or receding ? Speed of light in air=3xx10^(8) ms^(-1).
Answer» ANSWER :`1.15xx10^(6) MS^(-1)`, RECEDING