Physics
For which one of the following, ''Diodes' are generally used for?

Filtration
Modulation
Rectification
Amplification

ANSWER DOWNLOAD EXAMIANS APP

Physics
Inside an aeroplane, flying at a high altitude,

normal humidity and partial vacuum are maintained.
normal atmospheric pressure is maintained by the use of air pumps.
the pressure is the same as that outside.
the pressure inside is less than the pressure outside.

ANSWER DOWNLOAD EXAMIANS APP