Sound | Class 9th Science Complete Chapter In 20 Mins | Rapid Revision By Anjali Mam

📚 Join our FREE Class 9th Champion Batch & Get free Hand Written Notes: Enroll Now:- https://bit.ly/4f4rte2 📲 PW App/Website: https://physicswallah.onelink.me/ZAZB... 📚 PW Store: https://physicswallah.onelink.me/ZAZB... ------------------------------------------------------- 🔗 Related Playlist: Link Complete MATHS in One Shot for Class 9th :- https://shorturl.at/r2m4C Complete SST in One Shot for Class 9th :- https://shorturl.at/zUnkZ Complete SCIENCE One Shot Class 9th :- https://shorturl.at/JCHas Class 9 Snapshot Series - Quick Revision :- https://shorturl.at/iArdx ------------------------------------------------------- 📌 𝐏𝐇𝐘𝐒𝐈𝐂𝐒 𝐖𝐀𝐋𝐋𝐀𝐇 𝐒𝐎𝐂𝐈𝐀𝐋 𝐌𝐄𝐃𝐈𝐀 🌐 Telegram: https://t.me/Physics_Wallah_Official_... 🌐 Instagram:   / physicswallah   🌐 Facebook:   / physicswallah   🌐 Twitter:   / physics__wallah   🌐 LinkedIn:   / physicswallah   🌐 Quora: https://pwofficial.quora.com ------------------------------------------------------- ⏳ 𝐓𝐢𝐦𝐞𝐬𝐭𝐚𝐦𝐩𝐬: 00:00 - Introduction 00:43 - Sound 02:05 - Waves 02:38 - Types of waves 04:45 - Sound waves and its propagation 07:19 - Characteristics of waves 10:45 - Characteristics of sound waves 16:51 - Speed of sound in different media 17:35 - Reflection of sound 18:32 - Echo 20:15 - Reverberations 21:26 - Application of reflection of sound 23:33 - Range of hearing 24:09 - Applications of ultrasound 27:23 - Thank you bachhon ------------------------------------------------------- 📌 For any Queries or Complaints visit: https://bit.ly/PW_Queries OR give a Missed Call on 07019-243-492 -------------------------------------------------------