A list of mediums is given below.
(i) wood (iii) air
(ii) water (iv) vaccum In which of these mediums can sound travel?

Options

A. i & ii only
B. iii & iv only
C. i, ii & iii only
D. ii, iii & iv only

Answer

To determine in which of the given mediums sound can travel, we need to analyze each medium based on the properties of sound.

### Step-by-Step Solution:

1. **Understanding Sound as a Mechanical Wave**:
- Sound is classified as a mechanical wave, which means it requires a medium (solid, liquid, or gas) to travel.

2. **Analyzing Each Medium**:
- **(i) Wood**:
- Wood is a solid medium. Since sound can travel through solids due to the close proximity of particles, sound can indeed travel through wood.
- **(ii) Water**:
- Water is a liquid medium. Sound can also travel through liquids as the particles are close enough to transmit vibrations. Therefore, sound can travel through water.
- **(iii) Air**:
- Air is a gaseous medium. Sound can travel through gases as well, since there are particles in the air that can vibrate and carry sound waves. Hence, sound can travel through air.
- **(iv) Vacuum**:
- A vacuum is an empty space that contains no particles (no solid, liquid, or gas). Since sound requires a medium to travel and there are no particles in a vacuum, sound cannot travel through a vacuum.

3. **Conclusion**:
- Sound can travel through wood, water, and air, but it cannot travel through a vacuum.

### Final Answer:
Sound can travel in the following mediums: **Wood, Water, and Air**. It cannot travel in **Vacuum**.

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