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प्रश्न
Explain the two ways by which the pitch of the sound generated by a stretched string can be changed.
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उत्तर
- A string vibrates at a specific fundamental frequency. It is possible to make pitches with multiple frequencies with the same string.
- The length and diameter of the string determine its frequency.
- Changing the length of a string causes it to vibrate at a different frequency. Shorter strings have a greater frequency, which leads to a higher pitch.
- When a musician presses her finger against a string, she reduces its length. The more fingers she puts to the string, the shorter it becomes, and the higher the pitch.
Thick strings with a big diameter vibrate slower and at a lower frequency than thin ones.
संबंधित प्रश्न
How is the time period of a simple pendulum affected, if at all, in the following situations:
- The length is made four times.
- The acceleration due to gravity is reduced to one-fourth.
State how does the time period of a simple pendulum depend on (a) length of pendulum, (b) mass of bob, (c) amplitude of oscillation and (d) acceleration due to gravity.
The frequency of sound is measured in ______.
Explain how the frequency of oscillation is related to the length of a pendulum and the amplitude of its oscillation.
Two clocks A and B are shown in the following figure. Clock A has an hour and a minute hand, whereas clock B has an hour hand, a minute hand as well as a second hand. Which of the following statement is correct for these clocks?
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
Give scientific reason.
In earlier times, people used to listen for the arrival of a distant train by putting their ear to the rail.
