JEE Main 2022 (Online) 29th June Evening Shift | Communication Systems Question 36 | Physics

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 increased by

125 m

250 m

375 m

500 m

JEE Main 2022 (Online) 29th June Morning Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

Only 2% of the optical source frequency is the available channel bandwidth for an optical communicating system operating at 1000 nm. If an audio signal requires a bandwidth of 8 kHz, how many channels can be accommodated for transmission :

375 $$\times$$ 10⁷

75 $$\times$$ 10⁷

375 $$\times$$ 10⁸

75 $$\times$$ 10⁹

JEE Main 2022 (Online) 28th June Evening Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

Amplitude modulated wave is represented by $${V_{AM}} = 10\,[1 + 0.4\cos (2\pi \times {10^4}t)]\cos (2\pi \times {10^7}t)$$. The total bandwidth of the amplitude modulated wave is :

10 kHz

20 MHz

20 kHz

10 MHz

JEE Main 2022 (Online) 28th June Morning Shift

MCQ (Single Correct Answer)

-1

Out of Syllabus

Match List-I with List-II