Which one the following statements is ture?

Options

A. both light and sound waves in air are transverse
B. The sound waves in air are longitudinal while the light waves are transverse
C. Both light and sound waves in air are longitudinal
D. Both light and sound waves can travel in varcuum

Answer

To determine which statement is true regarding light and sound waves, let's analyze each option step by step.

### Step 1: Understand the Nature of Light Waves
- **Light Waves**: Light is an electromagnetic wave, which means it does not require a medium to propagate. Light waves are transverse waves, where the oscillations of the electric and magnetic fields are perpendicular to the direction of wave propagation.

### Step 2: Understand the Nature of Sound Waves
- **Sound Waves**: Sound is a mechanical wave that requires a medium (like air, water, or solids) to travel. Sound waves are longitudinal waves, where the oscillations occur in the same direction as the wave propagation.

### Step 3: Analyze Each Statement
1. **Both light and sound waves in air are transverse.**
- This statement is **false** because sound waves are longitudinal, not transverse.

2. **The sound waves in air are longitudinal, while the light waves are transverse.**
- This statement is **true**. Sound waves are indeed longitudinal, and light waves are transverse.

3. **Both light and sound waves in air are longitudinal.**
- This statement is **false** because light waves are transverse.

4. **Both light and sound waves can travel in vacuum.**
- This statement is **false** because sound requires a medium to travel and cannot propagate in a vacuum, while light can travel in a vacuum.

### Conclusion
The only true statement is: **The sound waves in air are longitudinal, while the light waves are transverse.**