Question
एक ज्यावक्रिय तरंग निम्नलिखित समीकरण द्वारा व्यक्त की जाती है: y (x, t) 3.0 sin (3.52t-2.01x) cm जहाँ x तरंग संचरण की दिशा में स्थान निरूपित करता है। तरंग का आयाम, तरंग संख्या, तरंगदैर्घ्य, आवृत्ति तथा वेग परिकलित करें। ।
ख) जब टेकों (supports) के बीच की दूरी 40 cm है तो एक तानित तार 30 Hz आवृत्ति पर अपनी मूल विधा में कंपन करता है। प्रस्पन्द का आयाम 4 cm है। तार का द्रव्यमान 20 g है। तरंग की संचरण चाल परिकलित करें।
ग) सिद्ध कीजिए कि विभिन्न आयाम परंतु परिमित कलान्तर की दो रैखिकतः ध्रुवित प्रकाश तरंगों के अध्यारोपण से हमें दीर्घवृत्तीय ध्रुवित तरंगे प्राप्त होती हैं। यह भी सिद्ध करें कि रैखिक- ध्रुवण तथा वृत्त-ध्रुवण, दीर्घवृत्त-ध्रुवण की विशेष स्थितियों हैं।
Answer :
Word Count : 680
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### संख्यात्मक समाधान #### (1) तरंग के गुणांक: दी गई तरंग समीकरण है: \[ y(x, t) = 3.0 \sin(3.52t - 2.01x) \, \text{cm} \] इस समीकरण में: - \( y(x, t) \) : विस्थापन (displacement) - \( t \) : समय (time) - \( x \) : स्थान (position) - \( 3.0 \) : आयाम (amplitude) cm - \( 3.52 \) : समय-आवृत्ति (angular frequency, \( \omega \)) rad/s - \( 2.01 \) : स्थान-आवृत्ति (wave number, \( k \)) rad/cm हम इन गुणांक से विभिन्न तरंगीय गुणों की गणना करेंगे। ##### आयाम: आयाम \( A = 3.0 \, \text{cm} \). ##### तरंग संख्या \( k \) (Wave Number): तरंग संख्या \( k \) का सूत्र है: \[ k = 2\pi / \lambda \] जहां \( \lambda \) तरंगदैर्घ्य (wavelength) है। समीकरण में \( k = _______ ____ _________ _____ ___.
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