Identify the correct statement from among the following :

Correct Answer: Sound cannot travel through vacuum.

Explanation:

Let us analyze each statement to determine its correctness:

1. "Sound cannot travel through vacuum."
Sound is a mechanical wave that requires a material medium (solid, liquid, or gas) for its propagation. In a vacuum, there are no particles to vibrate and transmit energy, so sound cannot travel through it. Therefore, this statement is correct.

2. "The lower the frequency of the vibration, higher is the pitch."
Pitch is directly proportional to the frequency of vibration. A lower frequency results in a lower pitch (or bass sound), while a higher frequency results in a higher pitch (or shrill sound). Therefore, this statement is incorrect.

3. "The loudness of sound is determined by the frequency of vibration."
Loudness is determined by the amplitude of vibration, not the frequency. Larger amplitude produces a louder sound, whereas frequency determines the pitch. Therefore, this statement is incorrect.

4. "Pitch of sound is determined by its amplitude."
As established, the pitch of a sound is determined by its frequency, while its amplitude determines loudness. Therefore, this statement is incorrect.

Thus, the only correct statement among the given options is that Sound cannot travel through vacuum.