Choose the correct answer
Sound can travel through
$(a)$. gases only

$(b)$. solids only

$(c)$. liquids only
$(d)$. solids, liquids and gases.

AcademicPhysicsNCERTClass 8

The correct answer is: $(d)$. solids, liquids, and gases.

Explanation:

Let us know what is sound and what are its characteristics-

Sound:

Sound is a form of energy produced by vibrating bodies. When something vibrates, the sound is produced. After traveling through various mediums from the sound source, the sound reaches our ears, and sound is heard.

Type of sound wave:

Sound waves are longitudinal waves.

Sound waves can't travel through a vacuum:

A sound wave requires a medium to travel. Sound waves can not travel through a vacuum.

Speed of the sound:

At 20 °C, the speed of sound in air is about 343 meters per second.

Mediums through which sound can travel:

When a vibrating body causes the medium (water, air, etc.) around it to vibrate, the sound wave travels. Sound can travel in solids, liquids, and gases.

Therefore, option $(d)$ is correct.

raja
Updated on 10-Oct-2022 13:25:02

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