JEE Main & Advanced
Physics
Communication System / संचार तंत्र
JEE PYQ-Communication System
question_answer
A radar has a power of 1kW and is operating at a frequency of 10 GHz. It is located on a mountain top of height 500m. The maximum distance upto which it can detect object located on the surface of the earth (Radius of earth ) is: [AIEEE 2012]