Stars and other galactic objects may be moving towards or away from us at very h

Question

Stars and other galactic objects may be moving towards or away from us at very high speeds. This following cases, you are given the type of emitted radiation (as if you were at rest relative to the object) and the type of radiation towards which the observed light is shifted. From this information determine whether the object is traveling towards or away from you. away Green light emitted by the object is shifted towards red light. towardsBlue light emitted by the object is shifted towards infrared radiation away Blue light emitted by the object is shifted towards ultraviolet radiation. towards Infrared radiation emitted by the object is shifted towards radio waves.

Explanation / Answer

when a star moves away from us , then there is red shift

and when a star moves towards us , then there is blue shift

Now, for the given scenrios

4-Radio waves emitted by the object is shifted towards infrared light.
>> as the wavelength is decreasing , Object is moving towards

2-Infrared radiation emitted by the object is shifted towards blue light.
>> as the wavelength is increasing , Object is moving away

3+Ultraviolet radiation emitted by the object is shifted towards blue light.
>> as the wavelenth is increasing ,the object must be moving away

1-Green light emitted by the object is shifted towards red light.
>> as the wavelenth is increasing ,the object must be moving away

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