JEE Main 2023 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 11 April 2023, Shift 1, Physics Q31

Question 31 of 90 in this shift, Physics question 1 of 30, Section A.

A transmitting antenna is kept on the surface of the earth. The minimum height of receiving antenna required to receive the signal in line of sight at 4 km distance from it is

x \times 10^{-2}

m. The value of

x

is __________. (Let, radius of earth

R = 6400

km)

(1)1.25
(2)12.5
(3)125Official answer
(4)1250

Official answer

Option 3

NTA final key.

Chapter: Communication Systems
Topic: No close match in our taxonomy
Idea tested: No close match in our taxonomy