Earth is moving towards a fixed star with a velocity of `30 kms^(-1)`. An oberver on earth observes a shift of `0.58 Å` in wavelength of light coming from star. What is the actual wavelength of light emitted by star ?

A star is going away from the earth. An observer on the earth will see the wavelength of light coming from the star

A star is going away from the earth. An observer on the earth will see the wavelength of light coming from the star

Earth is moving towards a stationary star with a velocity 100 kms^(-1) . If the wavelength of light emitted by the star is 5000Å, then the apparent change in wavelength observed by the observer on earth will be

A distant star is moving constantly towards the Earth at a speed of 2.3 xx 10^4 ms^(-1) . A shift of 0.5 Å in wavelengths is observed from the Earth. Calculate the actual value of wavelength emitted from the star if the Earth is considered at rest with respect to the distant star.