Q. 255.0( 3 Votes )
In which case is the speed of sound more; the humming of a bee or the roaring of a lion?
The speed of sound does not depend on the amplitude of the sound. So, both the sounds- the humming of bee and the roaring of a lion travel at the same speed but differ in loudness due to difference in amplitudes.
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Figure X showa a trace of a sound wave produced by a particular tuning fork:
(a) On the graph paper given in Figure Y, draw a trace of the sound wave which has higher frequency than that shown in Figure X.
(b) On the graph paper shoen in Figure Z, draw a trace of the sound wave which has a larger amplitude than that shown in Figure X.Lakhmir Singh & Manjit Kaur - Physics
Draw a curve showing density or pressure variations with respect to distance for a disturbance produced by sound. Mark the position of compression and rarefaction on this curve. Also define wavelengths and time-period using this curve.NCERT Science - Exemplar
Establish the relationship between speed of sound, its wavelength and frequency. If velocity of sound in air is 340 m s-1, calculate
(i) Wavelength when frequency is 256 Hz.
(ii) Frequency when wavelength is 0.85 m.NCERT Science - Exemplar
On which day, a hot day or a cold day, an echo is heard sooner? (Give reason for your answer.Lakhmir Singh & Manjit Kaur - Physics
In which medium, air or water, an echo is heard much sooner? Why?Lakhmir Singh & Manjit Kaur - Physics
A body vibrating with a time-period of s produces a sound wave which travels in air with a velocity of 350 m/s. Calculate the wavelength.Lakhmir Singh & Manjit Kaur - Physics
Sound produced by a thunderstorm is heard 10 s after the lightning is seen. Calculate the approximate distance of the thunder cloud. (Given speed of sound = 340 m s-1)NCERT Science - Exemplar
Define the terms ‘frequency’, ‘wavelength’ and ‘velocity’ of a sound wave. What is the relation between them?Lakhmir Singh & Manjit Kaur - Physics
A sound producing body is at considerable distance from a man. There can be four different media W, X, Y and Z between the sound producing body and the man. The medium X brings the sound to man most quickly whereas medium Z tajes the maximum time. The time taken by medium W in bringing sound to man is less than that of X but more than that of Z. The medium Y, however, fails to bring the sound from the sound producing body to the man. Which medium could be the one:
(a) having no fixed shape and no fixed volume?
(b) having a fixed volume but no fixed shape?
(c) having the same composition as that on the moon?
(d) having a fixed shape and a fixed volume?Lakhmir Singh & Manjit Kaur - Physics