Dr. S K Jain and Dr. Shailesh K Jain Solutions for Chapter: Sound, Exercise 4: CLASS ASSIGNMENT 4

Author:Dr. S K Jain & Dr. Shailesh K Jain

Dr. S K Jain Physics Solutions for Exercise - Dr. S K Jain and Dr. Shailesh K Jain Solutions for Chapter: Sound, Exercise 4: CLASS ASSIGNMENT 4

Attempt the practice questions on Chapter 6: Sound, Exercise 4: CLASS ASSIGNMENT 4 with hints and solutions to strengthen your understanding. Physics solutions are prepared by Experienced Embibe Experts.

Questions from Dr. S K Jain and Dr. Shailesh K Jain Solutions for Chapter: Sound, Exercise 4: CLASS ASSIGNMENT 4 with Hints & Solutions

EASY
9th CBSE
IMPORTANT

Why do sound waves get reflected from hard surfaces both even and rough.

MEDIUM
9th CBSE
IMPORTANT

What is echo? What should be the minimum distance between the observer and obstacle for echo to be heard?

EASY
9th CBSE
IMPORTANT

What are reverberations? How can reverberations be minimised in auditorium/hall?

EASY
9th CBSE
IMPORTANT

Name some simple devices based on multiple reflection of sound.

MEDIUM
9th CBSE
IMPORTANT

Explain briefly the stepwise operation of the human ear.

MEDIUM
9th CBSE
IMPORTANT

How are some defects in a metal block be detected using ultrasound?

MEDIUM
9th CBSE
IMPORTANT

Does sound follow the same laws of reflection as light does?

MEDIUM
9th CBSE
IMPORTANT

How is ultrasound used for cleaning hard-to reach places?