How much time does light take to reach us from the next nearest star 'Proxima Centauri' ?

How much time does light take to reach us from the sun ?

In how much time does moonlight reach the Earth?

A physics teacher asked a student to find how much time does the light take to reach the earth if the distance between the sun and the earth is 150xx10^(6)km ? Teacher also gives an extra input that velocity of light is 3xx10^(8)ms^(-1) . What would be the answer of the student?

A body sliding on a smooth inclined plane requires 4s to reach the bottom, starting from rest at the at the top. How much time does it take to cover ont-foruth the distance startion from rest at the top?

A star is 20 light years from the Earth How much time does it take for the light from the star to reach the Earth ?

How much time does it take to perform 500J of work at a rate of 10W?