How our Ears catch sound: We have just learnt how sound vibrations from a source propagate through the air and reach out ears. Let us now discuss how our ears actually ‘hear’ these sound vibrations. The ear can be broadly classified into three parts: the outer ear, the middle ear, and the inner ear.
Outer ear: The part of the outer ear that is visible to us is called pinna. The sound collected passes through auditary canal. At the end of auditory canal there is a thin membrane called the ear drum or tympanic membrane. When compression of medium produced due to vibration of the object reaches the ear drum, the pressure on the outside of the membrane increases and forces the ear drum inwards.
Middle ear: The middle ear is the cavity with three important ear bones. The moddle ear transmits the amplified pressure variations recieved from the sound wave to the inner ear.
Inner ear: In the inner ear, the pressure variations are turned into electrical signals by the chochlea. These electrical signals are than sent to the brain via the auditory nerve, and the barin interprets them as sound.
.The human ear is divided into parts. _______________________________ | |||
Right Option : C | |||
View Explanation |
Which part of the human ear carries the electrical impluse to the brain? | |||
Right Option : B | |||
View Explanation |
Human ears can sense sound waves travelling in air having wavelength of ________________________ | |||
Right Option : C | |||
View Explanation |
My experience with Abhyas academy is very good. I did not think that my every subject coming here will be so strong. The main thing is that the online tests had made me learn here more things.
It was good as the experience because as we had come here we had been improved in a such envirnment created here.Extra is taught which is beneficial for future.
It has a great methodology. Students here can get analysis to their test quickly.We can learn easily through PPTs and the testing methods are good. We know that where we have to practice
One of the best institutes to develope a child interest in studies.Provides SST and English knowledge also unlike other institutes. Teachers are co operative and friendly online tests andPPT develope practical knowledge also.
My experience with Abhyas is very good. I have learnt many things here like vedic maths and reasoning also. Teachers here first take our doubts and then there are assignments to verify our weak points.
Abhyas is a complete education Institute. Here extreme care is taken by teacher with the help of regular exam. Extra classes also conducted by the institute, if the student is weak.
Abhyas Methodology is very good. It is based on according to student and each child manages accordingly to its properly. Methodology has improved the abilities of students to shine them in future.
My experience was very good with Abhyas academy. I am studying here from 6th class and I am satisfied by its results in my life. I improved a lot here ahead of school syllabus.
It was a good experience with Abhyas Academy. I even faced problems in starting but slowly and steadily overcomed. Especially reasoning classes helped me a lot.
I have spent a wonderful time in Abhyas academy. It has made my reasoning more apt, English more stronger and Maths an interesting subject for me. It has given me a habbit of self studying