The approximate size of a galaxy can be measured by using the doppler effect. true or false.

The correct answer is False.

Explanation:

Scientists use the Doppler effect to understand the universe by determining the motion of the object.

Doppler effect: It is the phenomenon in which there is relative motion between the source and listener or source or observer.

Red shift and blue shift can be explained by using the concept of Doppler effect.

From red shift and blue shift, one can conclude that galaxies or stars are moving towards us or going away from us.

The light is shifted to longer wavelength which is red in the case of red shift. The light is shifted to shorter wavelength which is blue in the case of blue shift.

Therefore, "the approximate size of a galaxy can be measured by using the Doppler effect", the given statement is false.

the answer is a. at the equator

if they have a finite resultant