Question 1
1 Mark
Note is a sound
Options
Option A
of mixture of several frequencies
Option B
of mixture of two frequencies only
Option C is correct
of a single frequency
Option D
always unpleasant to listen
Questions & Answers: "Sound"
Complete guide to "Sound" for Physics students. Below you will find important questions and model answers to help you prepare.
9 Questions
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We are building a dedicated quiz for this topic, but you can test your skills on a similar concept: NCERT-IX Gravitation: Practice Set 1.
Question 2
1 Mark
A key of a mechanical piano struck gently and then struck again but much harder this time. In the second case
Options
Option A is correct
sound will be louder, but pitch will not be different
Option B
sound will be louder, and pitch will also be higher
Option C
sound will be louder, but pitch will be lower
Option D
both loudness and pitch will remain unaffected
Question 3
1 Mark
In SONAR, we use
Options
Option A is correct
ultrasonic waves
Option B
infrasonic waves
Option C
radio waves
Option D
audible sound waves
Question 4
1 Mark
Sound travels in air if
Options
Option A
particles of medium travel from one place to another
Option B
there is no moisture in the atmosphere
Option C is correct
disturbance moves
Option D
both particles as well as disturbance travel from one place to another
Question 5
1 Mark
When we change feeble sound to loud sound, we increase its
Options
Option A
frequency
Option B is correct
amplitude
Option C
velocity
Option D
wavelength
Question 6
1 Mark
In the following curve half the wavelength is
Options
Option A
A B
Option B is correct
B D
Option C
D E
Option D
A E
Question 7
1 Mark
Earthquake produces which kind of sound before the main shock wave begins
Options
Option A
ultrasound
Option B is correct
infrasound
Option C
audible sound
Option D
none of the above
Question 8
1 Mark
Infrasound can be heard by
Options
Option A
dog
Option B
bat
Option C is correct
rhinoceros
Option D
human beings
Question 9
1 Mark
Before playing the orchestra in a musical concert, a sitarist tries to adjust the tension and pluck the string suitably. By doing so, he is adjusting
Options
Option A
intensity of sound only
Option B
amplitude of sound only
Option C is correct
frequency of the sitar string with the frequency of other musical instruments
Option D
loudness of sound