Question

The 'Loudness' and 'Pitch' of sound respectively are the human perception to

• A. intensity of sound and frequency of sound.
• B. intensity of sound and velocity of sound.
• C. frequency of sound and velocity of sound.
• D. frequency of sound and intensity of sound.

Hint:

Loudness relates to intensity; pitch relates to frequency.

Answer 1

The Correct Option is A

Step 1: Link sensation to property:
Loudness: intensity. Pitch: frequency. Quality (timbre): waveform.

Step 2: Check the options:
Option (A) pairs loudness with intensity and pitch with frequency, which matches. The other options bring in velocity of sound, which is fixed by the medium.

Final Answer:
Option (A) is correct. \[ \boxed{\text{Intensity and frequency (A)}} \]