When a sound wave travels in air, the physical quantity which is transferred from one place to the other is

Options

A. mass
B. force
C. momentum
D. energy

Explanation

To solve the question, "When a sound wave travels in air, the physical quantity which is transferred from one place to the other is," we can follow these steps:

### Step 1: Understand the nature of sound waves
Sound waves are mechanical waves that travel through a medium (like air) by causing the particles of that medium to oscillate. However, these particles do not move from one location to another; they simply vibrate in place.

**Hint:** Consider how particles in a medium behave when sound waves pass through.

### Step 2: Analyze the options
We have four options to consider:
1. Mass
2. Force
3. Momentum
4. Energy

### Step 3: Evaluate each option
- **Option 1: Mass** - Since sound waves cause particles to oscillate but not to move from one place to another, mass is not transferred. Therefore, this option is incorrect.

**Hint:** Think about whether mass can be transferred without the movement of particles.

- **Option 2: Force** - Force is a vector quantity and is related to the interaction between objects. While sound waves can exert forces, the concept of force does not represent what is transferred through the wave itself. Thus, this option is also incorrect.

**Hint:** Consider if force can exist independently of the objects it acts upon.

- **Option 3: Momentum** - Momentum is also a vector quantity and depends on the mass and velocity of an object. Similar to force, while sound waves may involve momentum, they do not transfer momentum in the same way. Therefore, this option is incorrect.

**Hint:** Reflect on whether momentum can be transferred in a wave without the movement of mass.

- **Option 4: Energy** - Sound waves carry energy as they propagate through the medium. This energy is associated with the disturbance created by the oscillating particles. Therefore, energy is indeed transferred when sound waves travel through air.

**Hint:** Think about what happens to the energy of a wave as it travels through a medium.

### Step 4: Conclusion
After evaluating all options, the best answer is **Option 4: Energy**. When a sound wave travels in air, the physical quantity that is transferred from one place to another is energy.

**Final Answer:** Energy