MEDIUM
9th CBSE
IMPORTANT
Earn 100

What is the nature of the ocean waves in deep water?

Important Questions on Sound

MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 12 - Sound>CHAPTER EXERCISE>Q 10
What will increase, if we change feeble sound to loud sound?
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 12 - Sound>CHAPTER EXERCISE>Q 11
Which physical quantity remains unchanged after reflection of sound wave?
EASY
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 12 - Sound>CHAPTER EXERCISE>Q 12
Give the principle involved in megaphone.
EASY
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 12 - Sound>CHAPTER EXERCISE>Q 13
The window panes of houses sometimes crack when bomb explodes even at a large distance. Why?
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 12 - Sound>CHAPTER EXERCISE>Q 14
How do submarines know the depth of a sea?
EASY
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 12 - Sound>CHAPTER EXERCISE>Q 15
What is compression and rarefaction in longitudinal wave? Explain.
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 12 - Sound>CHAPTER EXERCISE>Q 16
Why does the amplitude of oscillation get reduced over a period of time? Explain with diagram.
MEDIUM
9th CBSE
IMPORTANT
All In One SCIENCE CBSE Class IX>Chapter 12 - Sound>CHAPTER EXERCISE>Q 17
What is the intensity of sound wave? Give its relation with amplitude.