10th Science Chapter -05 Acoustics Creative One Mark Question and Answers Part-02
10th Science Chapter -05 Acoustics Creative One Mark Question and Answers Part-02
01.The amount of energy passing per second through unit area is called intensity of sound
a) true
b) False
Correct answer
true
02.Infrasound can be heard of produced by
a) dog
b) bat
c) rhinoceros
d) human beings
Correct answer
rhinoceros
03.Which statement is true?
a) Sound wave can propagate as longitudinal or transverse depending on the transmitting medium
b) sound waves are longitudinal waves and they propagate to the transmitting medium
c) sound waves are transverse and they propagate perpendicular to the transmitting medium
d) sound waves can propagate as longitudinal or transverse depending on the temperature
Correct answer
sound waves are longitudinal waves and they propagate to the transmitting medium
04.waves created by Earth Quake are Infrasonic.
a) true
b) false
Correct answer
true
05.Compression are region of lowest pressure
a) true
b) False
Correct answer
False
06.The sensation of sound persists in all brains for about 1 second
a) true
b) False
Correct answer
False
07.sound energy passing per second through a unit area held perpendicular is called
a) intensity
b) frequency
c) amplitude
d) quality
Correct answer
intensity
08.The particles of the medium move from one part to another part during propagation
a) true
b) False
Correct answer
False
09.The speed f sound n air increase with decrease in decrease in temperature
a) true
b) False
Correct answer
False
10.sound requires a material medium for its propagation
a) true
b) False
Correct answer
true
11.sound travels with a velocity of _____ in dry air
a) 332 ms^-1
b) 330 ms^-1
c) 331 ms^-1
d) 336 ms^-1
12.The pitch of the wave is directly proportional to the frequency
a) true
b) False
Correct answer
true
13.When a sound wave travels through air, the air particles
a) vibrate along the direction of the wave motion
b) vibrate but not in any fixed direction
c) vibrate perpendicular to the direction of the wave motion
d) do not vibrate
14.Medium is not required for the propagation of sound
a) true
b) False
Correct answer
False
15.Velocity of sound decreases with the increase in density of gas
a) true
b) False
Correct answer
true
16..sound can travel through solids gases liquids and even vacuum,
a) true
b) false
Correct answer
false
17.If a sound wave trav10^4 Hz at 344 ms^-1els with a frequency of 1.25 x 10^4 Hz at 344 m s^-1, the wave length will be
a) 27.52 m
b) 275.2 m
c) 0.02752 m
d) 2.752 m
Correct answer
0.02752 m
18.Sound travels with a speed of 330 ms^-1,what is the wavelength of sound whose frequency is 550 Hz?
a) 0.6 m
b) 0.7 m
c) 0.4 m
d) 0.2 m
Correct answer
0.6 m
