Physics 10 Chapter 11 - Sound - 10

Physics 10 Chapter 11 - Sound - 10

1. What is the characteristic of sound called by which we can distinguish between two sounds of same loudness and pitch?

a) Intensity
b) Pitch
c) Loudness
d) Quality

2. What do the sound waves transfer from the sounding body to the listener?

a) Energy
b) Frequency
c) Velocity
d) Matter

3. Upon which of the following intensity of sound depends?

a) Frequency of vibrating body
b) Amplitude of vibrating body
c) Area of vibrating body
d) Quality of vibrating body

4. If area of a vibrating body increases, then which of the following increases?

a) Loudness
b) Intensity
c) Quality
d) Pitch

5. What is the sound energy passing per second through a unit surface held perpendicular to the direction of propagation os sound waves called?

a) Pitch
b) Intensity
c) Quality
d) Loudness

6. What is intensity of a sound?

a) Biological quantity
b) None of these
c) Physical quantity
d) Chemical quantity

7. What is the SI unit of intensity of a sound?

a) Watt square per metre
b) Watt square metre
c) Watt per square metre
d) Watt per metre

8. Which of the following intensity of sound is louder than the other intensities?

a) 10^-2 Wm^-2
b) 0.1 Wm^-2
c) 1 Wm^-2
d) 10^-1 Wm^-2

9. By which factors intensities of sound are scaled?

a) Factors of one
b) Factors of ten
c) Factors of thousand
d) Factors of hundred

10. What is the SI unit of intensity of a sound?

a) Wm³
b) Wm^-3
c) Wm^-2
d) Wm^-1

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