RRB GROUP D Physics Quiz - 38

Attempt now to get your rank among 3 students!

Question 1:

Why does the sky appear perfect blue in the afternoon?

Question 2:

Which among the following waves is used for communication by artificial satellites?

Question 3:

Why does the boiling point of water decrease at higher altitudes?

Question 4:

What do you understand by the physical quantity "Density" ?

Question 5:

Which instrument is used to measure humidity?