Question
Download Solution PDF500 KHz वारंवारतेच्या सिग्नलसाठी अँटेनाची लांबी किती असायला हवी?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFसंकल्पना:
- सिग्नल प्रसारित करण्यासाठी, आपल्याला अँटेना किंवा एरियल आवश्यक आहे.
- या अँटेनाचा आकार सिग्नलच्या तरंगलांबीशी तुलना करता येईल असा असावा (किमान 1/4 परिमाण) जेणेकरून अँटेना सिग्नलच्या वेळेतील फरक योग्यरित्या जाणू शकेल.
- उदाहरणार्थ, आपल्याकडे वारंवारता (f) 20 kHz ची विद्युत चुंबकीय लहर असल्यास, तरंगलांबी (λ) 15 किमी असेल.
गणना:
ते पाहता,
500 kHz वारंवारतेच्या विद्युतचुंबकीय लहरी प्रसारित केल्या जातात, म्हणजे,
f = 500 kHz
म्हणून अँटेनाची किमान लांबी =
येथे c हा प्रकाशाचा वेग आहे, λ तरंगलांबी आहे आणि f ही तरंगाची वारंवारता आहे
∴ अँटेनाची लांबी =
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