Sound - 1 (Class IX)
| Description: All about sound | |
| Number of Questions: 15 | |
| Created by: Rani Rajan | |
| Tags: Sound Transversal to a Pair of Lines Properties of Transversal of Parallel Lines Adjacent Angles and Linear Pairs Complementary and Supplementary Angles Characteristics of Waves Mechanism of Origin and Propagation of Sound |
Which of the following ranges of frequency is known as the audible range?
Pitch is expressed in
Bats produce ultrasound to catch their prey. Which of the following animals do(es) the same?
When sound wave travels through a medium, the particles of the medium show compression and rarefaction. What happens when compression takes place in the medium?
Why are sound waves considered as mechanical waves?
Which of the following is/are the main characteristics of sound waves?
The outer ear collects sound from the surroundings. These sound vibrations are amplified several times by the three bones in the middle ear. These three bones are
The velocity of sound waves in different media depends upon
According to the wave equation, which of the following statements is correct about the velocity of sound waves?
Which of the following characteristics of sound allow(s) the ear to distinguish sounds that have the same pitch and loudness?
SONAR measures distance, direction and speed of underwater objects using
One can hear his sound echo by shouting loudly in a big hall. What causes this echo of sound?
Which of the following is the correct order of sound waves reaching our ears?
(a) Disturbance in the medium (b) Vibration (c) Compression rarefaction (d) Propagation of waves (e) Ears (f) Sound energy produced
What is the time interval between the original sound and reflected sound when echo is heard?
The speed of sound is maximum in