but I have heard that human beings can resist till 35-500c. is it true
Yes, its true. Humans can tolerate temperature utpo 35- 50oC.
As you told me in the Last doubt that the earphone has to simply travel the air into your ears but how can it be possible in the space there is no air ? But I heard that the earphones work in space is that true or not?
What is the maximum intensity level that can be heard by human ear?