Advertisements
Advertisements
Question
What are mechanical waves?
Advertisements
Solution
The waves which travel in the medium through the vibrations of the medium particles about their mean positions are called mechanical waves.
APPEARS IN
RELATED QUESTIONS
Name the phenomenon involved in tunning a radio set to a particular station
Why is a loud sound heard at resonance?
How do you tune your radio set to a particular station ? Name the phenomenon involved in doing so and define it.
Name the phenomenon involved in tuning your radio set to a particular station and define it.
In Fig. A, B, C and D are four pendulums suspended from the same elastic string XY. The lengths of pendulum A and D are equal, while the length of pendulum B is shorter and of the pendulum C is longer. Pendulum A is set into vibrations.

- What is your observation about the vibrations of pendulum D?
- Give reason for your observation in part (a).
- What type of vibrations take place in pendulums Band C?
- Give reason for the answer in part (c).
A bucket kept under a running tap is getting filled with water. A person sitting at a distance is able to get an idea when the bucket is about to be filled.
(i) What change takes place in the sound to give this idea?
(ii) What causes the change in the sound?
Explain why does the rear mirror of a motorbike start Vibrating Violently, at some particular speed of motorbike?
A vibrating tuning fork is placed over the mouth of a burette filled with water. The tap is opened and the water level gradually falls. It is observed that the sound becomes the loudest for a particular length of the air column. What is the name of the phenomenon taking place when this happens? Why does the sound become the loudest?
A string stretched between its ends is made to vibrate by placing the stem of a vibrating tuning fork at its one end. State three ways how you will increase the frequency of note produced by the string.
What are the factors that affect the frequency of a vibrating string and how do they affect the frequency?
