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Sound Book Back Questions & Answers, Exercises, Solutions, Tests, Quizzes, Videos and Podcasts for Class 8 | Unit 1 | Physics | Science | Samacheer Kalvi – English Medium

8th Standard Samacheer Kalvi Physics New Book Back Questions & Answers:: https://www.thelearning.app/samacheer-kalvi-english-medium/class-8/science-3/sound-2/exercises

Podcasts: https://www.thelearning.app/samacheer-kalvi-english-medium/class-8/science-3/sound-2/videos

Tests & Quizzes: https://www.thelearning.app/samacheer-kalvi-english-medium/class-8/science-3/sound-2/tests

Flash Cards: https://www.thelearning.app/samacheer-kalvi-english-medium/class-8/science-3/sound-2/flashcards

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00:00 Introduction
00:14 Choose the correct answer
04:56 Fill in the blanks
06:49 Match the following
07:34 Assertion and reason

Questions answered in this video –

1. Sound waves travel very fast in

2. Which of the following are the characteristics of vibrations? i. Frequency ii. Time period iii. Pitch iv. Loudness

3. The amplitude of the sound wave decides its

4. What kind of musical instrument is a sitar?

5. Find the odd one out

6. Noise is produced by

7. The range of audible frequency for the human ear is

8. If the amplitude and frequency of a sound wave are increased, which of the following is true?

9. Sound is produced by __________.

10. The vibrations of a simple pendulum are also known as __________.

11. Sound travels in the form of _________.

12. High frequency sounds that cannot be heard by you are called_________.

13. Pitch of a sound depends on the ________ vibration

14. If the thickness of a vibrating string is increased, its pitch ___________.

15. Ultrasonic

16. Speed of sound in air

17. Infrasonic

18. Sound propagation

19. Assertion: When lightning strikes, the sound is heard a little after the flash is seen. Reason: The velocity of light is greater than that of the sound

20. Assertion: Two persons on the surface of moon cannot talk to each other. Reason: There is no atmosphere on moon.

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