-
question_answer1)
The sound in human is produced by
A)
heart done
clear
B)
mouth done
clear
C)
larynx done
clear
D)
hair done
clear
View Solution play_arrow
-
question_answer2)
Frequency of sound is lowest for
A)
man done
clear
B)
woman done
clear
C)
young boy done
clear
D)
young girl done
clear
View Solution play_arrow
-
question_answer3)
In which medium sound travel fastest
A)
solid done
clear
B)
liquid done
clear
C)
gas done
clear
D)
vacuum done
clear
View Solution play_arrow
-
question_answer4)
For an oscillating pendulum of fixed length, which of the following is true?
A)
frequency depends on amplitude of oscillation done
clear
B)
frequency and time period are not related. done
clear
C)
time period depends on amplitude of oscillation done
clear
D)
frequency and time period are related and do not depend on amplitude of oscillation. done
clear
View Solution play_arrow
-
question_answer5)
Which one of the following material will reflect sound better?
A)
Thermocole done
clear
B)
Curtain made from cloth done
clear
C)
Steel done
clear
D)
Paper done
clear
View Solution play_arrow
-
question_answer6)
An object vibrated with a frequency of 15 Hz. Which of the following is true?
A)
It produces sound which we can hear. done
clear
B)
It does not produce sound. done
clear
C)
It produces sound which we cannot hear. done
clear
D)
It produces sound which we can hear if we strain our ears. done
clear
View Solution play_arrow
-
question_answer7)
Unit of frequency is
A)
decibel (dB) done
clear
B)
Hertz (Hz) done
clear
C)
meter done
clear
D)
second done
clear
View Solution play_arrow
-
question_answer8)
Inverse of frequency is called
A)
amplitude done
clear
B)
frequency done
clear
C)
loudness done
clear
D)
time period done
clear
View Solution play_arrow
-
question_answer9)
Time taken for 10 oscillation of a body is 20 second, then time period of the body is
A)
1 sec done
clear
B)
2 sec done
clear
C)
3 sec done
clear
D)
4 sec done
clear
View Solution play_arrow
-
question_answer10)
Eardrum is a part of
A)
sound producing organ done
clear
B)
skeletal system done
clear
C)
hearing organ done
clear
D)
reproductive organ done
clear
View Solution play_arrow
-
question_answer11)
The hearing range of human ear is
A)
20 Hz to 20, 000 Hz done
clear
B)
less than 20 Hz done
clear
C)
more than 20,000 done
clear
D)
20,00 Hz to 25, 000 Hz done
clear
View Solution play_arrow
-
question_answer12)
The voice box is also called
A)
stomach done
clear
B)
heart done
clear
C)
larynx done
clear
D)
mouth done
clear
View Solution play_arrow
-
question_answer13)
Large amplitude of sound vibrations w produce
A)
loud sound done
clear
B)
weak sound done
clear
C)
slow sound done
clear
D)
none of these done
clear
View Solution play_arrow
-
question_answer14)
The pitch of sound depends oil
A)
frequency done
clear
B)
amplitude done
clear
C)
both of these done
clear
D)
none of these done
clear
View Solution play_arrow
-
question_answer15)
Vocal cords are the part of
A)
mouth done
clear
B)
ear done
clear
C)
eyes done
clear
D)
larynx done
clear
View Solution play_arrow
-
question_answer16)
The length of the vocal Cords is maximum for
A)
man done
clear
B)
Woman done
clear
C)
boy done
clear
D)
girl done
clear
View Solution play_arrow
-
question_answer17)
Shrill sound is of
A)
higher frequency done
clear
B)
lower frequency done
clear
C)
higher amplitude done
clear
D)
lower amplitude done
clear
View Solution play_arrow
-
question_answer18)
Flat sound is of
A)
higher pitch done
clear
B)
lower pitch done
clear
C)
higher amplitude done
clear
D)
lower amplitude done
clear
View Solution play_arrow
-
question_answer19)
Frequency of a body is 10 Hz, then range is
A)
ultrasonic done
clear
B)
infrasonic done
clear
C)
audible done
clear
D)
decible (dB) done
clear
View Solution play_arrow
-
question_answer20)
Unit of loudness
A)
Hertz (Hz) done
clear
B)
meter done
clear
C)
second done
clear
D)
none of these done
clear
View Solution play_arrow
-
question_answer21)
The speed of sound in solid, liquid and gas can be correctly compared as
A)
solid > liquid > gas done
clear
B)
liquid > gas > solid done
clear
C)
liquid > solid > gas done
clear
D)
gas > liquid > gas done
clear
View Solution play_arrow
-
question_answer22)
A person, pressing his ear on the railway tracks can hear an approaching train. This is possible due to
A)
vibration of railway tracks done
clear
B)
vibration of air done
clear
C)
more speed of sound in solid medium done
clear
D)
hearing ability of the man done
clear
View Solution play_arrow
-
question_answer23)
A person can be identified by the quality of sound produced by him. The characteristic of a sound can be determined by
A)
amplitude done
clear
B)
frequency done
clear
C)
loudness done
clear
D)
all of the above done
clear
View Solution play_arrow
-
question_answer24)
The voices of men, women and children are different due to difference in
A)
larynx done
clear
B)
lungs done
clear
C)
vocal cords done
clear
D)
wind pipe done
clear
View Solution play_arrow
-
question_answer25)
An object moving at a speed greater than that of sound is said to be moving at
A)
ultrasonic speed done
clear
B)
sonic speed done
clear
C)
infrasonic speed done
clear
D)
supersonic speed done
clear
View Solution play_arrow
-
question_answer26)
The velocity of sound in vacuum is
A)
\[332\text{ }m\text{ }{{s}^{-1}}\] done
clear
B)
\[330\text{ }m\text{ }{{s}^{-1}}\] done
clear
C)
\[\text{288 }m\text{ }{{s}^{-1}}\] done
clear
D)
0 done
clear
View Solution play_arrow
-
question_answer27)
Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen. This is because
A)
speed of sound is greater than speed of light done
clear
B)
speed of sound is equal to the speed of light done
clear
C)
speed of light is much greater than the speed of sound done
clear
D)
none of these. done
clear
View Solution play_arrow
-
question_answer28)
A to and fro motion by an object is also called
A)
periodic motion done
clear
B)
oscillatory motion done
clear
C)
Cyclic motion done
clear
D)
none of these done
clear
View Solution play_arrow
-
question_answer29)
An object oscillates 50 times in one second. What should be its frequency?
A)
0.2 Hz done
clear
B)
0.02 Hz done
clear
C)
0.002 Hz done
clear
D)
50 Hz done
clear
View Solution play_arrow
-
question_answer30)
The time period of simple pendulum is 0.2 sec. what is its frequency of oscillation?
A)
0.5 Hz done
clear
B)
5 Hz done
clear
C)
50 Hz done
clear
D)
1 Hz done
clear
View Solution play_arrow