Characteristics of sound wave - class-VIII
Description: characteristics of sound wave | |
Number of Questions: 52 | |
Created by: Saurabh Mittal | |
Tags: physics world of sounds sound |
Fill in the blank.
The sound waves in a medium are characterised by the
State whether given statement is True or False
A wave is a disturbance that moves through a medium when the particles of the medium set neighboring particles into motion.
Fill in the blank.
Which of the following is NOT correct?
A person can be identified by the quality of sound produced by him. The characteristic of a sound can be determined by:
Which of the following statement is NOT correct?
Which of the following statements is not true about a sound wave ?
Microphone is used to convert
Sound waves in the air don't show ______?
Sound is a form of energy. True or false.
Characteristic of sound which enables us to distinguish between two sound of same loudness and pitch :
Sound is
Sound wave can be described graphically by
In density time graph
In wave motion particles of the medium
During a wave motion
Sound wave is a
Peak of the density/Pressure - distance curve represent
Mark the correct statement
Explain why, if we strike a table lightly, we hear a soft sound but if we hit the table hard, a loud sound is heard.
By studying sound waves, we may come to know about its:
Which are the two properties that affect wave speed ?
The motion that is repeated at regular intervals is termed as
Which of the following is not a characteristics of mechanical waves?
Find out the relationship between the frequency and amplitude of a sound wave?
Sound waves cannot travel in:
Compressional wave among the following is?
Sound waves do not exhibit polarization because, unlike light waves, they are not:
Which type of wave can be diffused by Acoustic diffusers?
Sound waves can diffract easily because
Time taken to complete a wave is called as
The wavelength of light absorbed by $Pr$ form of phytochrome is:-
Which of the following type of waves is different from others?
The frequency of a man's voice is $300Hz$ and its wavelength is $1$ meter. If the wavelength of a child's voice is $1.5m$, then the frequency of the child's voice is:
two waves of same frequency and of intensity ${I} _{0}$ and $9{I} _{0}$ produces interference. If at a certain point the resultant intensity is $7{I} _{0}$ then the minimum phase difference between the two sound waves will be
Sound frequency that can be detected by the human ear is
When you speak to your friend which of the following quantities have a unique value in the sound produced by both the boys?
What is the unit of frequency?
Sound is produced by a
If one puts one ears to the steel rail, the sound of a coming train can be heard even when the train cannot be seen. One can conclude from this observation that
A. Sound travels faster in steel than in air.
B. Amplitude of sound in the rail is much larger than in air.
C. Sound can travel larger distance in solids than in air.
D. Quality of sound in rail is better than in air.
The reasonable conclusion are
How is the frequency of a wave related to its time period?
Longitudinal waves are possible in
The voices of Men, Women and children differ because of difference in their
When longitudinal wave propagates through a medium, then the physical quantities propagating in the direction of wave are
If the velocity of sound in a gas is $200 {ms}^{-1}$ when the temperature is $127^0 C$, then the velocity of sound in the same gas when temperature is increased by $900^0 F$ is ______ ${ms}^{-1}$
A sound wave is a pressure wave; regions of high (compressions) and low pressure (rarefactions) are established as the result of the vibrations of the sound source. These compressions and rarefactions result because sound :
The speed of highly penetrating ultrasonic waves is :
Suppose a stick is struck against a frying pan in vacuum. Which of the following is/are true?
Through which of the following media does sound travel the fastest?
The velocity of sound in air is not affected by change in
Consider the following
l. Waves created on the surfaces of a water pond by a vibrating source.
ll. Wave created by an oscillating electric field in air.
lll. Sound waves travelling under water.
Which of these can be polarized