The width of a radio beam from a 1 m diameter parabolic antenna at 1 GHz is about-A-100°B-50°C-5°D-2°-B-50°

Question

The width of a radio beam from a 1 m diameter parabolic antenna at 1 GHz is about-A-100&deg;B-50&deg;C-5&deg;D-2&deg;-B-50&deg;

APTITUDE CRACK · Accepted Answer

B 50&deg; Beam width between nulls of a parabolic antenna . Therefore 50&#176; is the nearest value.

Microwave Communication - Engineering