Sound waves - Exercise (Part 2) | Class 11 Physics Chapter 16 (HC Verma) JEE/NEET

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Published on February 23, 2023 6:30:08 AM ● Video Link: https://www.youtube.com/watch?v=Z8ij1zCB5Eg

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Sound Waves (2021)

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✔️ Class: 11th
✔️ Subject: Physics
✔️ Chapter: Sound Waves (Chapter 16)
✔️ Topic Name: Sound Waves - Exercise (Part 2)
✔️ Topics Covered In This Video (By Ashish Sir): In this video, Ashish Sir investigates Sound Waves Exercise (Part 2). Whether you are learning this concept as part of a physics course or just curious about Sound Waves, you will gain insight into the topic. Sir is discussing about the Exercise Questions. This video will prove a great learning tool for enthusiasts.
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00:00 Introduction: Sound Waves - Exercise (Part 2)
00:34 Question 21 to 30: Sounds Waves - Exercise : Chapter 16
Que. 21 Sound with intensity larger than 120 dB appears painful
to a person. A small speaker delivers 2.0 W of audio output.
How close can the person get to the speaker without hurting
his ears?
1:44:04 Question 31 to 40: Sounds Waves - Exercise : Chapter 16
Que. 31 Two speakers S, and S,, driven by the same amplifier,
are placed at y = 1.0 m and y= -1.0 m. The speakers vibrate in
phase at 600 Hz. A man stands at a point on the X-axis at a
very large distance from the origin and starts moving parallel
to the Y-axis. The speed of sound in air is 330 ms. (a) At what
angle will the intensity of sound drop to a minimum for the first
time? (b) At what angle will he hear a maximum of sound
intensity for the first time? (c) If he continues to walk along the
line, how many more maxima can he hear?
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