Physics
The laws which govern the motion of planets are called ________

Avogadro's laws
Newton's Laws
Kepler's Laws
De Morgan's Laws

ANSWER DOWNLOAD EXAMIANS APP

Physics
It is easier to roll a stone up a sloping road than to lift it vertical upwards because

Work done in lifting the stone is equal to rolling it.
Work done in rolling is more than in lifting.
Work done in both is same but the rate of doing work is less in rolling.
Work done in rolling a stone is less than in lifting it.

ANSWER DOWNLOAD EXAMIANS APP

Physics
Planets do not twinkle because

They are very far away from the earth resulting in decrease in intensity of light
They emit light of a constant intensity
They are nearer to earth and hence we receive a greater amount of light.
Their distance from the earth does not change with time

ANSWER DOWNLOAD EXAMIANS APP