Question

Radha watches the night sky and sees the Moon in its complete form. After some number of days, she finds the Moon to be in its full form again. How many days does it take for the Moon to do so?

• A. 28

Answer 1

The correct option is A 28
The Moon is the brightest object in the night sky, and it revolves around the Earth. It completes one round around the Earth in about 28 days. So, every phase of the Moon reappears in the night sky every 28 days. So, when Radha saw the Moon in its full form again, about 28 days had passed.