18.) What is the value of intensity of sound in different situations?
19.) What is the intensity of sound?
20.) What are the factors affecting the intensity of sound?
21.) What is sound pollution?
22.) What is noise?
23.) What are the Cause of Sound Pollution?
24.) What are the major effects of sound pollution?
25.) What are the ways of Reducing Noise Pollution?
26.) Differentiate between:
(a) wavelength and amplitude (c) infrasound and ultrasound
(b) infrasound and audible sound
27.) Answer the following questions given below :
a. The speed of sound remains the same on changing the frequency or wavelength of sound, why?
b. Write the range of frequency of sound that can be heard by human beings.
c. What is the relationship betweenthe w
28.) Solve these numerical problems:
a. Calculate the wavelength of the sound wave if the speed of sound in air is 332 m/s and its frequenc y is 10 Hz. (Ans: 33 .3 m)
b. Calculate the speed of the sound wave if the wave length is 22 m and its frequency is 10 H
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