Video by EduDeck – The Learning App – Samacheer Kalvi via YouTube
Source

Acoustics Book Back Questions & Answers, Exercises, Solutions, Tests, Quizzes, Videos and Podcasts for Class 10 | Unit 5 | Physics | Science | Samacheer Kalvi – English Medium | TNPSC

New Book back Answers: https://www.thelearning.app/samacheer-kalvi-english-medium/class-10/science-5/acoustics/exercises

Podcasts: https://www.thelearning.app/samacheer-kalvi-english-medium/class-10/science-5/acoustics/videos

Tests & Quizzes: https://www.thelearning.app/samacheer-kalvi-english-medium/class-10/science-5/acoustics/tests

Flash Cards: https://www.thelearning.app/samacheer-kalvi-english-medium/class-10/science-5/acoustics/flashcards

Visit https://www.thelearning.app by EduDeck. Learn, Practice & Evaluate From Anywhere.

00:00 Introduction
00:10 Choose the correct answer
03:43 Fill in the blanks
04:57 Match the following
05:23 True or false
06:29 Assertion and reason

Questions answered in this video –

1. When a sound wave travels through air, the air particles

2. Velocity of sound in a gaseous medium is 330 m s1. If the pressure is increased by 4 times without causing a change in the temperature, the velocity of sound in the gas is

3. The frequency, which is audible to the human ear is

4. The velocity of sound in air at a particular temperature is 330 m s1. What will be its value when temperature is doubled and the pressure is halved?

5. If a sound wave travels with a frequency of 1.25 104 Hz at 344 m s1, the wavelength will be

6. The sound waves are reflected from an obstacle into the same medium from which they were incident. Which of the following changes?

7. Velocity of sound in the atmosphere of a planet is 500 m s1. The minimum distance between the sources of sound and the obstacle to hear the echo, should be

8. Rapid back and forth motion of a particle about its mean position is called _____

9. If the energy in a longitudinal wave travels from south to north, the particles of the medium would be vibrating in _____

10. A whistle giving out a sound of frequency 450 Hz, approaches a stationary observer at a speed of 33 m s^-1. The frequency heard by the observer is (speed of sound = 330 m s^-1) ______.

11. A source of sound is travelling with a velocity 40 km/h towards an observer and emits a sound of frequency 2000 Hz. If the velocity of sound is 1220 km/h, then the apparent frequency heard by the observer is ___________.

12. Infrasonic

13. Echo

14. Ultrasonic

15. High pressure region

16. Sound can travel through solids, gases, liquids and even vacuum.

17. Waves created by Earth Quake are Infrasonic.

18. The velocity of sound is independent of temperature.

19. The Velocity of sound is high in gases than liquids.

20. (A): Assertion: The change in air pressure affects the speed of sound… (R): Reason: The speed of sound in a gas is proportional to the square of the pressure

21. (A): Assertion: Sound travels faster in solids than in gases… (R): Reason: Solid posses a greater density than that of gases.

Go to Source