Question

Given below are two statements:

Statement I: Two sounds of the same intensity but different frequency characteristics may appear to be of different loudness.

Statement II: The response of the human ear to noise of different frequencies is not uniform.

In the light of the above statements, choose the most appropriate answer from the options given below:

1. Both Statement I and Statement II are correct
2. Both Statement I and Statement II are incorrect
3. Statement I is correct but Statement II is incorrect
4. Statement I is incorrect but Statement II is correct

Answer 1

Correct Answer - Option 1 : Both Statement I and Statement II are correct

Properties of a sound:

• Tones of the same intensity (power per area), but of different frequency, are perceived as being of different loudness.
• The loudness of the sound refers to the softness of the sound to the listener
• Loudness is defined as the property of sound which is used for differentiating between the loud and faint sound
• The intensity of the sound means the energy released with the wave of the sound
• Intensity is measured in the unit of decibel (dB)
• It is also proportional to the distance between the resting position and the maximum displacement of the wave or amplitude.
• Pitch is the result of different frequencies in the sound.
• Pitch is defined as the characteristic of sound which is used for differentiating between the shrill and flat sound.
• Loudness is not dependent on sound. It only happens in some specific cases.

Therefore, Both Statement I and Statement II are correct.