Advertisements
Advertisements
प्रश्न
Write true or false for a given statement.
A ticking clock sound is heard late when heard through a metal.
पर्याय
True
False
MCQ
चूक किंवा बरोबर
उत्तर
False.
A ticking clock sound is heard early when heard through a metal.
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Select the correct alternative :
We can hear sound of frequency
What is sound ?
What is the range of hearing for a normal person?
Name the principle used to find the depth of a sea.
A girl claps and hears the echo after reflection from a cliff which is 660 m away. If the velocity of sound is 330 ms-1, calculate the time taken for hearing the echo.
Match the pairs.
Group ‘A’ | Group ‘B’ |
(a) Flute | (1) Frequency less than 20 Hz |
(b) Frequency | (2) Frequency more than 20000 Hz |
(c) Sound level | (3) Vibrations in the air |
(d) Ultrasonic sound | (4) Measured in Hz |
(e) Infrasonic sound | (5) Decibel |
Name the factors on which the speed of sound depends.
The sound waves are reflected from an obstacle into the same medium from which they were incident. Which of the following changes?
Match the following
1. | Infrasonic | (a) | Compressions |
2. | Echo | (b) | 22 kHz |
3. | Ultrasonic | (c) | 10 Hz |
4. | High-pressure region | (d) | Ultrasonography |
The speed of sound in air at 0°C is ______.