Advertisements
Advertisements
Question
A sound wave whose frequency is 5000 Hz travels in air and then hits the water surface. The ratio of its wavelengths in water and air is ______.
Options
4.30
0.23
5.30
1.23
Advertisements
Solution
A sound wave whose frequency is 5000 Hz travels in air and then hits the water surface. Th e ratio of its wavelengths in water and air is 4.30.
APPEARS IN
RELATED QUESTIONS
Why are the ceilings of concert halls curved?
A wire of length 80 cm has a frequency of 256 Hz. Calculate the length of a similar wire under similar tension, which will have frequency 1024 Hz
State the use of echo by a bat, dolphin and fisherman.
What adjustments would you make for tuning a stringed instrument for it to emit a note of a desired frequency?
Explain how the principle of echo is used by
The dolphin to locate small fish as its prey
Mention two properties of a wave, one property which varies and the other which remains constant when the wave passes from one medium to another.
What is meant by echo depth sounding?
Why is an echo not heard when the distance between the source of sound and reflection body is less than 10 m?
Write short notes on reflection of sound waves from plane and curved surfaces.
Match the following:
| 1. | Stethoscope | a. | Repeated reflections |
| 2. | Echogram | b. | Multiple reflections |
| 3. | SONAR | c. | Ultrasonic waves |
| 4. | Reverberation | d. | Speed of underwater objects |
