It takes approximately ______ minutes for sunlight to reach the Earth.
We know that,
Earth-Sun distance = 1.496 x 108m
Velocity of light reaching Earth = 3 x 108 m/s
Time taken by light to reach earth is
=(Earth-sun distance)/(Velocity of light)
= (1.496 x 10^8 m)/(3 x 10^8 m/s)
= 8.31 minutes.
1.8 The planet which contributes maximum to the angular momentum of the solar system is
(A) Earth
(B) Mars
(C) Jupiter
(D) Saturn
98% of the angular momentum is concentrated in the planets and the remaining 2% is present in the sun. In other words, the sun does not rotate fast enough.
Jupiter is by far the largest of the planets in the solar system. Its mass is 318 times of that of Earth hence contributes maximum to the angular momentum of the solar system as it is proportional to the mass of the body.
