EASY
9th CBSE
IMPORTANT
Earn 100

Why do we prefer ultrasonic frequencies for real-life applications?

Important Questions on Sound

EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Exercises>Q A
How long does sound persist in our ears?
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Exercises>Q A
A running watch is placed in vacuum. Will you be able to listen to its ticking sound? Why?
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Exercises>Q A
Why is a sound wave called a longitudinal wave?
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Exercises>Q B
Why is the velocity of sound more in steel than in water or air?
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Exercises>Q B
How can we know from a distance that a car is approaching us?
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Exercises>Q B
Explain why explosion in stellar space is not audible on the surface of earth.
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Exercises>Q B
Why do we prefer ultrasonic sound over other frequencies like X-rays for medical applications?
EASY
9th CBSE
IMPORTANT
LIVING SCIENCE PHYSICS 9>Chapter 6 - Sound>Exercises>Q B
Why do we not hear echo at all places?