JEE Main 2021 · PhysicsMultiple choiceSingle correctMediumApplication

JEE Main 27 August 2021, Shift 2, Physics Q20

Question 20 of 90 in this shift, Physics question 20 of 30, Section A.

An antenna is mounted on a 400 m tall building. What will be the wavelength of signal that can be radiated effectively by the transmission tower upto a range of 44 km ?

(1) $37.8\ \mathrm{m}$
(2) $75.6\ \mathrm{m}$
(3) $302\ \mathrm{m}$
(4) $605\ \mathrm{m}$ Official answer

Official answer

Option 4

NTA final key.

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