Learn

Saturday, 31 October

JEE Main 2022 · PhysicsMultiple choiceOtherMediumRecall

JEE Main 27 June 2022, Shift 2, Physics Q50

Question 50 of 90 in this shift, Physics question 20 of 30, Section A.

We do not transmit low frequency signal to long distances because- (a) The size of the antenna should be comparable to signal wavelength which is unreal solution for a signal of longer wavelength. (b) Effective power radiated by a long wavelength baseband signal would be high. (c) We want to avoid mixing up signals transmitted by different transmitter simultaneously. (d) Low frequency signal can be sent to long distances by superimposing with a high frequency wave as well. Therefore, the most suitable option will be :
  1. (1)All statements are true
  2. (2)(a), (b) and (c) are true only
  3. (3)(a), (c) and (d) are true onlyOfficial answer
  4. (4)(b), (c) and (d) are true only

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

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.