Question

4. on 21st march days and nights are equal duration at all places of the earth

Answer 1

Answer:

hey mate..

Step-by-step explanation:

On March 21 and Sept 23 the apparent position of the sun is only above the equator . That is to say both the hemispheres experiences equal amount of day and night on these two days (march 21 and sept 23)

Answer 2

Step-by-step explanation:

On 21st March days and nights are equal at all places on earth because, on this day sun rays will fall in the vertical direction towards the equator or at the centre position of the Earth.

This leads to equal distribution of light from pole to pole which makes day and night duration equal.