A star is emitting yellow light. If it is accelerated towards earth then to an observer on earth, it will appear

Question

A star is emitting yellow light. If it is accelerated towards earth then to an observer on earth, it will appear (A) shinning yellow (B) gradually changing to violet (C) gradually changing to blue (D) unchanged

Tardigrade Admin · Accepted Answer

As the star coming closer to the earth, the frequency of the light increase and the wavelength decrease due to doppler effect. So the colour should gradually change to blue.

Q. A star is emitting yellow light. If it is accelerated towards earth then to an observer on earth, it will appear

shinning yellow

gradually changing to violet

gradually changing to blue

unchanged

As the star coming closer to the earth, the frequency of the light increase and the wavelength decrease due to doppler effect. So the colour should gradually change to blue.