A C Sehgal Solutions for Exercise 3: EXERCISES

Author:A C Sehgal

A C Sehgal Science Solutions for Exercise - A C Sehgal Solutions for Exercise 3: EXERCISES

Attempt the practice questions from Exercise 3: EXERCISES with hints and solutions to strengthen your understanding. Living Science 8 solutions are prepared by Experienced Embibe Experts.

Questions from A C Sehgal Solutions for Exercise 3: EXERCISES with Hints & Solutions

EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 13 - Sound>EXERCISES>Q B

Frequency is measured in SI units _____.

MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 13 - Sound>EXERCISES>Q B

The pitch of the sound produced in a guitar can be altered by reducing the vibrating length of the wire. True or false?

MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 13 - Sound>EXERCISES>Q B

What is the name given to sound produced by irregular vibrations?

MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 13 - Sound>EXERCISES>Q B

What travels faster—light or sound?

EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 13 - Sound>EXERCISES>Q B

A soft board will _____ (reflect/ absorb) most of the sound falling on it.

MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 13 - Sound>EXERCISES>Q B

What is the unit in which loudness of sound is measured?

EASY
8th CBSE
IMPORTANT
Living Science 8>Chapter 13 - Sound>EXERCISES>Q B

Prolonged exposure to noise louder than _____ dB can lead to permanent hearing damage.

MEDIUM
8th CBSE
IMPORTANT
Living Science 8>Chapter 13 - Sound>EXERCISES>Q B

Which surfaces reflect sound better—hard or soft?