Скачать или смотреть ध्वनि के परावर्तन के नियमों की जाँच के समय दोनों नलियों T_1 तथा T_2 के बीच एक उदग्र परदा क्यों र...

ध्वनि के परावर्तन के नियमों की जाँच के समय दोनों नलियों T_1 तथा T_2 के बीच एक उदग्र परदा क्यों रखते हैं ?
Class: 9
Subject: PHYSICS
Chapter: प्रायोगिक खण्ड
Board:Bihar Board

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