Advertisements
Advertisements
प्रश्न
A key of mechanical piano is first struck gently and then struck again but much harder this time. In the second case :
पर्याय
sound will be louder but pitch will not be different
sound will be louder and the pitch will also be higher
sound will be louder but pitch will be lower
both loudness and pitch will remain unaffected
Advertisements
उत्तर
By pressing the key gently and then again by, some force, increasing the amplitude of the wave, but the frequency remains the same.
(a) Sound will be louder, but pitch will not be different.
संबंधित प्रश्न
Explain how sound is produced by your school bell.
Fill in the blank.
Sound is produced when a body ______.
Explain why you can predict the arrival of a train by placing your ear on the rails without seeing it.
What is the general name of the waves consisting of :
(a) compressions and rarefactions?
(b) crests and troughs?
What is the name of the strings which vibrate in our voice box when we talk?
Name the device which is used to produce sound in laboratory experiments?
State whether the following statement is true or false :
Sound produced by a vibrating body travels to our ears by the actual movement of air.
How does sound from a sound producing body travel through air to reach our ears? Illustrate your answer with the help of a labelled diagram.
Figure X shows a trace of a sound wave produced by a particular tuning fork :
(a) On the graph paper given in Figure Y, draw a trace of the sound wave which has a higher frequency than that shown in figure X.
(b) On the graph paper show in Figure Z, draw a trace of the sound wave which has a larger amplitude than that shown in Figure X.
How are different sound notes generated in musical instruments like guitar, which uses strings for sound generation, and flute, which uses blown air for sound generation?
