This is an Advanced question. Though I can see that wavelength of sound increases during the day i see no relation to the amplitude. But i feel there might be an explaination bound to the syllabus.
A man stands on the ground at a fixed distance from a siren which emits sound of fixed amplitude . The man hears the sound to be louder on a clear day than on a clear night. Why?
@Viraam_Rao @pratyaksh_tyagi @Viraam_Rao @arush_kumar_singh @Arush_Sharma
@Chirag_Hegde bro are you sure question is correct? On the internet, all the sources say it’s louder at night time.
To this exact statement answer key says False
But just to be sure lemme confirm with mayank what his answer key says
Can you tell me the year?
Same here not able to relate amplitude with day and night.
Whats the reason though?
Apparently it’s related to refraction of sound waves and changing refractive index of the atmosphere
Lemme read it full
Ohhh yeah. Temperature gradient of atmosphere is different during day and night.
During day lower sections are less dense.
Something like mirage?
But what does it have to do with loudness
Just the range of sound
Apart from the waves coming directly at you, some waves could be refracted and then reach you.
Pls post the complete explanation sis.
In one of the cases, the sound wave refracts towards the earth (towards us) in that case it is louder. In the other case it refracts towards the sky, in which cases it is feeble. That direction where it moves depends on the temperature and R.I
But does more sound waves mean more loudness?
Interference se amplitude could increase right. So intensity could increase.
Ah okay I was comparing it to light but then realised I was thinking about the properties of light related to it's particle nature
@Viraam_Rao @Chirag_Hegde look at this gem
This is wrong, right?
Doesn't density and velocity change?
Yeah louder at night for sure
At least they could have copied this answer rather than just right something.
If we consider density proportional to T and velocity directly proportional to √T
Then too we get True acc to the equation in cengage's solution
Haan Vahi toh @Chirag_Hegde
Man I hate my previous papers book. So many mistakes
@Viraam_Rao LoL. Got it bro, thanks
But I reckon how they have given a wrong answer