What is the frequency of a body that produces 50 vibrations in two seconds?

A note produces 5 beats per second with a tuning fork of frequency 480Hz. What is the frequency of the note given that it produces 7 beats with 482Hz?

A string fixed at both ends, is vibrating in a particular mode of vibration. Vibration is such that a point on string is at maximum displacement and it is at a distance of one fourth of length of string from one end. The frequency of vibration in thus mode is 200 Hz . What will be the frequency of vibration when it vibrates in next mode such that the same point is at maximum displacement?

Sound can only be produced by vibrating bodies

(a) A string of length L is stretched between two rigid supports. It is plucked at the centre. What type of wave is formed in it? What is its frequency? (b) Obtain expressions for the frequency of higher harmonics of vibrations of a stretched string, (c) State the laws of vibrating string-

Two tuning forks vibrate with the same amplitude but the frequency of the first is double the frequency of the second. Which fork produces more intense sound in air ?

A string fixed at both ends is vibrating in the lowest mode of vibration for which a point at quarter of its length from one end is a point of maximum vibration . The note emitted has a frequency of 100 Hz . What will be the frequency emitted when it vibrates in the next mode such that this point is again a point of maximum vibratin ?

The diagram in Fig. shows three ways in which a string of length I in an instrument can vibrate. What is the ratio of frequency of vibrations in diagrams (i) and (ii) ?

The frequency of sound produced by a vibrating body in air is 15,000 Hz. Will the sound be audible to humans?

What is meant by the natural frequency of vibrations of a body ? Name one factor on which it depends

Two sounds of very close frequencies, say 256 Hz and 260 Hz are produced simultaneously. What is the frequency of resultant sound and also write the number of beats heard in one second?