Physics · 2022
JEE Main · 29 June 2022, Shift 1 · Q50
Only 2% of the optical source frequency is the available channel bandwidth for an optical communicating system operating at 1000 nm. If an audio…
Only $\displaystyle 2$% of the optical source frequency is the available channel bandwidth for an optical communicating system operating at $\displaystyle 1000$ nm. If an audio signal requires a bandwidth of $\displaystyle 8$ kHz, how many channels can be accommodated for transmission :
Official answer
(2)
$\displaystyle 75 \times 10^7$
More from Communication Systems
- The TV transmission tower at a particular station has a height of 125 m. For doubling the coverage of its range, the height of the tower should be…2022
- An amplitude modulated wave is represented by C_m(t)=10(1+0.2 cos 12560 t) sin (111 × 10^4 t) volts. The modulating frequency in kHz will be \ \ \ \.2021
- The maximum and minimum amplitude of an amplitude modulated wave is 16 V and 8 V respectively. The modulation index for this amplitude modulated wave…2021
- Given below are two statements: Statement I: A speech signal of 2 kHz is used to modulate a carrier signal of 1 MHz. The bandwidth requirement for…2021
- A modulating signal 2 sin (6.28 × 10^6) t is added to the carrier signal 4 sin (12.56 × 10^9) t for amplitude modulation. The combined signal is…2022
- A message signal of frequency 3 kHz is used to modulate a carrier signal of frequency 1.5 MHz. The bandwidth of the amplitude modulated wave is2023
- Match List I with List II Choose the correct answer from the options given below:2023
- A TV transmission tower antenna is at a height of 20 m. Suppose that the receiving antenna is at. (i) ground level (ii) a height of 5 m. The increase…2021
JEE Main 2022 Physics question, with the answer from NTA’s final answer key. Where our answers come from.