Physics
A person standing on a railway platform listens to the whistles of arriving and departing trains. The whistle heard is

Of higher intensity when train arrives
The same in both cases in all respects
Of higher pitch when train departs
Of higher pitch when train arrives

ANSWER DOWNLOAD EXAMIANS APP

Physics
The sky appears blue because

In white light, the blue component dominates
It is actually blue
The atmosphere scatters blue colour more than the others
All colours interfere to produce blue

ANSWER DOWNLOAD EXAMIANS APP