Physics
The sky appears blue because

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

ANSWER DOWNLOAD EXAMIANS APP

Physics
Which one of the following statements with regard to Jet stream, an upper level tropospheric wave, is not correct?

It follows the wave path near the tropopause at elevations of 8 km to 15 km.
In summer, the polar front jet achieves its maximum force.
It is narrow band of high-velocity wind.
Jet streams are typically continuous over long distances.

ANSWER DOWNLOAD EXAMIANS APP