In the following question from statement-1 (Assertion) is...

In the following question from statement-1 (Assertion) is followed by statement-2 (Reason) Each question has the following four choice out of which only one choice is correct (a) Statement-1 is true, statement-2 is true. Statement-2 is a correct explanation for statement-1. (b) Statement-1 is true, statement- 2 is true, statement-2 is not a correct explanation for statement-1. (c) Statement-1 is true, statement-2 is false (d) Statement-1 is false, statement- 2 is true. Statement-1 :- Modulated wave is received directly on a head phone Statement- $2:-$ High frequency waves are beyond audible range. (A) a (B) $\mathrm{b}$ (C) $\mathrm{c}$ (D) d

In the following question from statement-1 (Assertion) is followed by statement-2 (Reason) Each question has the following four choice out of which only one choice is correct
(a) Statement-1 is true, statement-2 is true. Statement-2 is a correct explanation for statement-1.
(b) Statement-1 is true, statement- 2 is true, statement-2 is not a correct explanation for statement-1.
(c) Statement-1 is true, statement-2 is false
(d) Statement-1 is false, statement- 2 is true.
Statement-1 :- Modulated wave is received directly on a head phone Statement- $2:-$ High frequency waves are beyond audible range.
(A) a
(B) $\mathrm{b}$
(C) $\mathrm{c}$
(D) d

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Key Concepts

Demodulation

Demodulation is the process of extracting the original information signal from a modulated carrier wave. Since carrier waves typically operate at high frequencies outside the audible range, devices such as receivers and amplifiers are used to convert or demodulate these signals into audio frequencies that can be effectively processed and heard, for example, through headphones.

Modulated Wave

A modulated wave is a carrier signal whose properties—such as amplitude, frequency, or phase—are varied in accordance with the information (or modulating signal) to be transmitted. This technique is fundamental in communication systems to allow low-frequency information signals to be transmitted over long distances by shifting them to higher frequency bands.

Audible Frequency Range

The audible frequency range comprises the set of frequencies that the human ear can detect, roughly between 20 Hz and 20 kHz. Any signal, such as many carrier waves used in communications, that falls outside this range is not directly perceivable as sound by humans.

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