है?
What is modulation? Why is it necessary in communication system
for sending a message?
प्रश्न-16
किसी 20 सेमी. फोकस दूरी के उत्तल लेंस के सम्पर्क में रखे 30 सेमी. फोकस दूरी के
अवतल लेंस के संयोजन से बने संयुक्त लेंस की फोकस दूरी क्या है? क्या यह संयोजन
अभिसारी लेंस है, अथवा अपसारी?
What is the focus distance of a combined lens made by combining
a concave lenses of 30 cm focus distance placed in contact with a
convex lens of 20 cm focus distance? Whether this combination
convergent lens or divergent?
।
प्रश्न-17 आइंस्टीन समीकरण के आधार पर प्रकाश-विद्युत प्रभाव की व्याख्या कीजिए
ffort hased nn Finstein equation.
Answers
Answered by
0
Answer:
Modulation allows us to send a signal over a bandpass frequency range. If every signal gets its own frequency range, then we can transmit multiple signals simultaneously over a single channel, all using different frequency ranges. Another reason to modulate a signal is to allow the use of a smaller antenna.
Answered by
0
Answer:
Modulation allows us to send a signal over a bandpass frequency range. If every signal gets its own frequency range, then we can transmit multiple signals simultaneously over a single channel, all using different frequency ranges. Another reason to modulate a signal is to allow the use of a smaller antenna.
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