Question

NTSE physics question If there is no atmosphere, then the duration of daylight on earth will (a) Increase (b) decrease (c) remain same (d) (d) None of these Please explain! Thanks

Answer 1

It will decrease slightly because due to atmosphere light reaches us a few minutes earlier and goes a few minute late due to refraction.
So without it, day time will decrease.

Answer B

Answer 2

It will decrease as we know that atmospheric  light reaches us a few minutes earlier and goes a few minute late 
 SO answer will be,(b)Decrease