Correct answer
D. 45°
Explanation
45° is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
A man lifts vertically a weight of 40kg through 1m in 10s; while a chile lifts vertically a weight of 10kg through a distance of 1m in 1s. What will be correct inference ?
Photoelectric effect was given by ____________________?
Absolute uncertainty in a measurement depends upon______________?
The name of the photon for quantum of light was proposed by________________?