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Fun Video: Sound & its Properties Video Lecture | Science & Technology for UPSC CSE
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FAQs on Fun Video: Sound & its Properties Video Lecture - Science & Technology for UPSC CSE
| 1. What is sound and how is it produced? |  |
Ans. Sound is a form of energy that is produced when an object vibrates. When an object vibrates, it creates sound waves that travel through the air or other mediums, such as water or solids. These waves then reach our ears and are interpreted as sound.
| 2. What are the properties of sound waves? | |
Ans. Sound waves have several important properties. They include frequency, amplitude, wavelength, and speed. Frequency refers to the number of vibrations per second and determines the pitch of the sound. Amplitude represents the intensity or loudness of the sound. Wavelength is the distance between two consecutive points in a sound wave, and speed is how fast the sound wave travels.
| 3. How does sound travel through different mediums? | |
Ans. Sound can travel through different mediums such as air, water, and solids. In each medium, sound waves transfer energy by causing particles to vibrate. In air, sound waves travel by causing air particles to compress and expand. In water, sound waves cause water molecules to vibrate, while in solids, such as walls, sound waves can travel through the vibrations of the solid's particles.
| 4. How does the pitch of a sound relate to its frequency? | |
Ans. The pitch of a sound is directly related to its frequency. Higher frequency sound waves have a higher pitch, while lower frequency sound waves have a lower pitch. For example, a high-pitched sound like a whistle has a higher frequency, while a low-pitched sound like a bass drum has a lower frequency.
| 5. How does the amplitude of a sound wave affect its volume? | |
Ans. The amplitude of a sound wave determines its volume or loudness. A larger amplitude corresponds to a louder sound, while a smaller amplitude results in a softer sound. For example, when you increase the amplitude of a guitar string's vibrations, the sound becomes louder. Similarly, decreasing the amplitude makes the sound softer.
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