Communication Systems
The direction of rotation of a CD is

Anticlockwise
Clockwise
Clockwise or anticlockwise depending on frequency of data stored
Mostly anticlockwise but some times clockwise

ANSWER DOWNLOAD EXAMIANS APP

Communication Systems
Circular polarization

None of these
Is useful in reducing depolarization effect on received wave
Involves critical alignment of transmitting and receiving antenna
Is useful in discrimination between reception of adjacent beams

ANSWER DOWNLOAD EXAMIANS APP