Home
Class 8
PHYSICS
A normal man is unable to hear the sound...

A normal man is unable to hear the sound emitted by source. Out of the possible reasons, the one which is not applicable is

A

The pitch of the sound may be too high

B

The pitch of the' sound may be too low

C

The quality of the sound is not matching with the man's requirements

D

The amplitude of sound may be too small

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding why a normal man is unable to hear the sound emitted by a source, we need to analyze the possible reasons provided and identify the one that is not applicable. ### Step-by-Step Solution: 1. **Understanding Sound Frequencies**: - The human ear can typically hear sounds in the frequency range of 20 Hz to 20,000 Hz (20 kHz). Sounds above this range are called ultrasonic, and sounds below this range are called infrasonic. 2. **Evaluating the Options**: - **Option 1**: The pitch of the sound may be too high. - This is applicable because if the frequency is above 20 kHz (ultrasonic), a normal man cannot hear it. - **Option 2**: The pitch of the sound may be too low. - This is also applicable because if the frequency is below 20 Hz (infrasonic), it is inaudible to humans. - **Option 3**: The amplitude of sound may be too small. - This option is misleading. While a very low amplitude (quiet sound) might make it hard to hear, it does not make it impossible. A person can still hear sounds at low amplitudes if they are within the audible frequency range. - **Option 4**: The quality of sound is not matching with man's requirement. - This option is not applicable. The quality of sound (timbre) does not affect the ability to hear it. A person may not prefer the sound quality, but it does not prevent them from hearing it if it is within the audible range. 3. **Conclusion**: - The option that is not applicable to the reason why a normal man cannot hear the sound emitted by a source is **Option 4**: "The quality of sound is not matching with man's requirement." ### Final Answer: The reason that is not applicable is: **The quality of sound is not matching with man's requirement.** ---
To solve the question regarding why a normal man is unable to hear the sound emitted by a source, we need to analyze the possible reasons provided and identify the one that is not applicable. ### Step-by-Step Solution: 1. **Understanding Sound Frequencies**: - The human ear can typically hear sounds in the frequency range of 20 Hz to 20,000 Hz (20 kHz). Sounds above this range are called ultrasonic, and sounds below this range are called infrasonic. 2. **Evaluating the Options**: ...
Promotional Banner

Similar Questions

Explore conceptually related problems

Of the following, the one which emits sound of higher pitch is :

A normal human being can hear sounds in the frequency range of ______.

When we hear a sound, we can identify its source from

Which instrument is employed to hear the heart sounds?

It is possible to hear beats from the two vibrating sources of frequency

S_(1) and S_(2) are two sources of sound emitting sine waves. The two sources are in phase. The sound emitted by the two sources interfers at point F . The waves of wavelength :

A man is swimming at a depth d in a sea at a distance L (gt gt d) from a ship (S). An explosion occurs in the ship and after hearing the sound the man immediately moves to the surface. It takes 0.8 s for the man to rise to the surface after he hears the sound of explosion. 0.2 s after reaching the surface he once again hears a sound of explosion. Calculate L. Give: speed of sound in air =340 ms^(-1) , Bulk modulus of water =2xx10^(9) Pa

A source of sound moves towards a listener with a velocity equal to that of sound. If the source emits n waves per second, then the listener moving away from the source with the same velocity receives