Advertisements
Advertisements
Question
When the pitch of note produced by a harmonium is lowered, then the wavelength of the note :
Options
decreases
first decreases and then increases
increases
remains the same
Advertisements
Solution
When the pitch of the harmonium is lowered, then the frequency is also lowered. Wavelength is inversely proportional to the frequency.
(c) Increases.
APPEARS IN
RELATED QUESTIONS
Which characteristics of the sound helps you to identify your friend by his voice while sitting with others in a dark room?
Which of the following cannot transmit sound? Water, Vacuum, Aluminium, Oxygen gas
What conclusion can be obtained from the observation that when the prongs of a sound making tuning fork touch the surface of water in a beaker, the water gets splashed?
What will be the change in the wavelength of a sound wave in air if its frequency is doubled?
Which object is vibrating when the following sounds are produced?
(i) The sound of a sitar
(ii) The sound of a tabla
(iii) The sound of a tuning fork
(iv) The buzzing of a bee or mosquito
(v) The sound of a flute
Give reason for the following :
In most of the cases, we cannot see the vibrations of a sound producing object with our eyes.
A device called oscillator is used to send waves along a stretched string. The string is 20 cm long, and four complete waves fit along its length when the oscillator vibrates 30 times per second. For the waves on the strings.
(a) what is their wavelength?
(b) what is their frequency
(c) what is their speed?
Describe an experiment to show that sound cannot travel through vaccum.
Sound travels in the air if
Suppose a stick is struck against a frying pan in vacuum. Will the frying pan vibrate? Will we be able to hear the sound? Explain.
