V K Sally and R Goel Solutions for Chapter: Sound, Exercise 11: EXERCISE

Author:V K Sally & R Goel

V K Sally Physics Solutions for Exercise - V K Sally and R Goel Solutions for Chapter: Sound, Exercise 11: EXERCISE

Attempt the practice questions on Chapter 5: Sound, Exercise 11: EXERCISE with hints and solutions to strengthen your understanding. Core Science Physics For Class 9 solutions are prepared by Experienced Embibe Experts.

Questions from V K Sally and R Goel Solutions for Chapter: Sound, Exercise 11: EXERCISE with Hints & Solutions

EASY
9th CBSE
IMPORTANT

In the region of compression or rarefaction in a longitudinal wave the physical quantity which does not change is

EASY
9th CBSE
IMPORTANT

 What do you understand by the term sound energy?

MEDIUM
9th CBSE
IMPORTANT

State three conditions necessary for hearing sound.

EASY
9th CBSE
IMPORTANT

State the laws of reflection of sound.

EASY
9th CBSE
IMPORTANT

 Describe an experiment to prove the law of reflection of sound.

MEDIUM
9th CBSE
IMPORTANT

The given graph shows the displacement versus time relation for a disturbance travelling with a velocity of 1500 ms-1. Calculate the wavelength of the disturbance.

 

 

EASY
9th CBSE
IMPORTANT

Which of the two graphs (i) and (ii) representing the human voice is likely to be the male voice? Give reason for your answer.    

Question Image

EASY
9th CBSE
IMPORTANT

 Why is the ceiling and wall behind the stage of good conference halls or concert halls made curved?