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Fun Video: Sound & its Properties Video Lecture - BPSC (Bihar)

FAQs on Fun Video: Sound & its Properties Video Lecture - BPSC (Bihar)

1. What is sound and how is it produced?

Ans. Sound is a form of energy that is produced by vibrating objects. When an object vibrates, it creates sound waves that travel through the air or other mediums. These sound waves are detected by our ears and interpreted as sound.

2. What are the properties of sound?

Ans. Sound has several properties, including pitch, volume, and timbre. Pitch refers to how high or low a sound is, and it is determined by the frequency of the sound waves. Volume, also known as loudness, is the strength or intensity of a sound. Timbre refers to the quality of a sound that distinguishes it from other sounds, such as the difference between a piano and a guitar.

3. How does sound travel through different mediums?

Ans. Sound can travel through different mediums, such as air, water, or solids. In each medium, sound waves travel by causing particles to vibrate. In air, for example, sound waves cause air particles to vibrate, creating compressions and rarefactions that propagate as the sound wave travels. Similarly, in water or solids, sound waves cause the particles of the medium to vibrate and transmit the sound.

4. Why does sound change when it travels through different mediums?

Ans. Sound can change when it travels through different mediums due to differences in the speed of sound and the density of the medium. The speed of sound varies depending on the medium, so when sound waves enter a new medium, their speed can change, resulting in a change in pitch. Additionally, the density of the medium can affect how sound waves propagate, leading to changes in volume and timbre.

5. How can sound be measured?

Ans. Sound can be measured using a unit called decibels (dB). Decibels represent the intensity or loudness of a sound. A sound level meter or a decibel meter is commonly used to measure sound levels. The decibel scale is logarithmic, meaning that a small change in decibel level represents a large change in sound intensity.

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Sep 01, 2025 Last updated

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