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संबंधित प्रश्न
Give one reason for Ultrasonic waves use for echo depth sounding purpose.
What is meant by the natural frequency of vibration of a body?
On What factors does the natural frequency of vibration of a body depend?
State one way of increasing the frequency of a note produced by an air column.
State two ways of increasing the frequency of vibrations of a stretched string.
Explain why strings of different thicknesses are provided on a stringed instrument.
[Hint: Natural frequency of vibration of a stretched string is inversely proportional to the radius (or thickness) of string so notes of different frequencies can be produces by vibrating different strings.]
A blade, fixed at one end, is made to vibrate by pressing its other end and then releasing it. State one way in which the frequency of vibrations of the blade can be lowered.
Two astronauts cannot hear each other on the moon. Why?
(a) Which one of the following graphs A or B shows free vibrations in a vacuum and which one shows free vibrations in a medium?
(b) How did you come to this conclusion.
