ESS
Grade-9
Easy
Question
Select the correct option.
- 1 – Red shift, 2 – Blue shift
- 1 – Green shift, 2 – Blue shift
- 1 – Blue shift, 2 – Red shift
- 1 – Red shift, 2 – Green shift
Hint:
The redshift occurs when the light from the object moves away from us. The blueshift occurs when the object moves towards us.
The correct answer is: 1 – Red shift, 2 – Blue shift
- The red shift and blue shift are the frequency of a light wave depending on the distance in which the light waves move.
- The light is known as redshift when the object is moving away from us.
- The blueshift occurs when the light moves toward us.
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