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प्रश्न
Write true or false for a given statement.
Female voice is shriller than the male voice.
विकल्प
True
False
उत्तर
True
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संबंधित प्रश्न
What is loudness of sound? What factors does it depend on?
Fill in the blank.
The pitch of a sound depends on its ________.
On what factor does the loudness of a sound depend ?
What is the nature of sound waves in air?
The flash of a gun is seen by a man 3 seconds before the sound is heard. Calculate the distance of the gun from the man (Speed of sound in air is 332 m/s).
What kinds of waves are produced in solids, liquids, and gases?
What is echolocation? How do animals make use of this phenomenon?
Match the following.
| 1. | Tuning fork | The point where density of air is maximum |
| 2. | Sound | Maximum displacement from the equilibrium position. |
| 3. | Compressions | The sound whose frequency is greater than 20,000 Hz. |
| 4. | Amplitude | Longitudinal wave. |
| 5. | Ultasonics | Production of sound. |
Two observers are stationed in two boats 4.5 km apart. A sound signal sent by one, under water, reaches the other after 3 seconds. What is the speed of sound in the water?
Write any two uses of ultrasonic sound.
