Question

Sound can move in:

• A. Solid
• B. Liquid
• C. Vacuum
• D. 1 and 2 both

Hint:

Sound waves require a medium to propagate. They can travel through solids and liquids but not through a vacuum. The speed of sound depends on the properties of the medium, such as density and elasticity.

Answer 1

The Correct Option is D

Step 1: Understand the Nature of Sound Waves.
Sound is a mechanical wave that requires a medium to propagate. It can travel through: 1. Solids:
Sound travels fastest in solids due to their high density and strong intermolecular forces. 2. Liquids:
Sound travels slower in liquids compared to solids but faster than in gases due to the intermediate density and molecular interactions. 3. Vacuum:
Sound cannot travel through a vacuum because there are no particles to transmit the wave. A vacuum lacks the medium necessary for sound propagation. Step 2: Analyze Each Option.
Option (1): Solid — Incorrect, as sound can also travel through liquids.
Option (2): Liquid — Incorrect, as sound can also travel through solids.
Option (3): Vacuum — Incorrect, as sound cannot travel through a vacuum.
Option (4): 1 and 2 both — Correct, as sound can travel through both solids and liquids. Step 3: Final Answer. $$ (4) \mathbf{1 \text{ and } 2 \text{ both}} $$