JEE Main 202331 JanuaryEvening Shift
- Exam
- JEE Main
- Year
- 2023
- Date
- 31 January
- Shift
- Evening Shift
- Subject
- Physics
- Chapter
- Communication System
JEE Main 2023 · 31 January · Evening Shift · Physics · Communication System
Given below are two statements Statement I : For transmitting a...
Given below are two statements
Statement I : For transmitting a signal, size of antenna should be comparable to wavelength of signal (at least in dimension).
Statement II : In amplitude modulation, amplitude of carrier wave remains constant (unchanged).
In the light of the above statements, choose the most appropriate answer from the options given below
Options
- ABoth Statement I and Statement II are correct
- BBoth Statement I and Statement II are incorrect
- CStatement I is incorrect but Statement II is correct
- DStatement I is correct but Statement II is incorrect
Correct answer
D. Statement I is correct but Statement II is incorrect
Step-by-step solution
In amplitude modulation frequency of carrier wave remains unchanged. Minimum size of antenna should be th of wavelength so that the antenna can sense the variations of the signal properly.