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What is the difference between loudness and intensity.
Important questions of this chapter sound
1.what do you understand by 1u or 1amu.
2.why is a bell provided with a big outer case?
what is the difference between Echo And Reverberation ?
What r the factors on which the speed of sound depends? Pls ans any1.. experts... quickly..
a person is listening to a tone of 500 Hz sitting at a distance of 450m from the source of the sound . What is the time interval between successive compressions from the source ?
Why does sound become faint with distance?
why we cannot heard echo in small room?
why would it be futile to attempt to detect sounds from other planets, even given the very best in audio detectors?
why are sound waves called mechanical waves?
DIFFERENCE BETWEEN INTENSITY AND LOUDNESS OF SOUND?/
The blood pressure in humans is greater at the feet than at the brain. Why?
Explain the working and applications of sonar.
what is the frequency of a sound wave whose time period is 0.05 sec
what are uses of infrasonic sound
Why does sound travel faster in Hydrogen than Oxygen?
a stone is dropped from the top of a tower 500m high into a pond of water at the base of the tower . when is the splash heard ? g = 10m/s2 and speed of sound = 340m/s
A person has a hearing range from 20Hz to 20KHz. what are the typical wavelength of sound waves in air corresponding to these two frequencies?(Speed of sound =344m/s)?
Why is it that children under the age of 5 can hear sounds upto 25 kHz but adults cannot do so?
why are the ceilings of concert halls made curved?
why sound wave are called as longitudinal wave?
a sound wave has a frequency of 2KHz and wavelength 35 cm.how long it will take to travel 1.5km?
a man stands in between two high raised building & blows a whistle.He hears two successive echos after 0.4s & 1.6s.Calculate the distance between the building.speed of sound is 332m/s.
what are the si unit of amplitude,freqency&wavelength
what are the avantages and disadvantages of echo and reverberation?
A stone is dropped into a well, 44.1 m deep. The sound of the splash is heard 3.13 s after the stone is dropped. Find the velocity os sound in air .
differentiate between crest and trough with more than 3 points (
I want to make a SUPW project please give me some simple ideas.
Which of the following is not a characteristic of sound ? (A) Pitch
(B) Wavelength
(C) Quality
(D) Loudness
write all formula's in chapter sound ... and defines...???
a sound wave strikes the surface of a reflecting body perpendicularly.the angle of incidence is:
90 45 0 none of these
it should be 45 right?
What is reverberation? How can it be reduced?
waves propogate well in:
a)unloaded slinky
b)loaded slinky
c)both a and b
d)none of these
A solid weighs 50 gf in air and 44 gf in when completely immersed in water. Calculate(i) the upthrust (ii) volume of the solid and (iii) the relative density of the solid
establish the relationship between speed of sound, its wavelength and frequency?
help!!!
state the laws of reflection of sound .explain three application based on these laws.
A tuning fork is vibrating at a rate of 30720 times per minute. I f the velocity of sound is 332 m/s , calculate
(a) the frequency of vibration in hertz
(b) the wavelength of the wave produced.
Define echo?Give its two applications.
list three characteristics of sound waves. state the factors on which each of these characteristics depend...
what is an echo? what are the two conditions required to hear an echo?
WHAT KIND OF ENERGY TRANSFORMATION TAKES PLACE IN THE FOLLOWING DEVICES
describe an experiment to show that sound cannot pass through vacuum?
a tuning fork has a number 256 marked on it. what does it signify?
how many vibrations will a tuning fork of frequency 280 hz will complete during the time sound travels forward in air by 18 cm.speed of sound in air be 336 m/sec
Write a short note on reverberation and echo.
how is echo formed?????????
The roof and walls of the auditorium are generally covered with sound absorbent materials like compressed fibreboard or draperies. Why is it so?(
1. Sound wave comprises of a series of compressions and rarefactions.
a. What are compressions and rarefactions?
b. In which form of waves-longitudinal or transverse does sound travel?
Can sound travel in vacuum? Why?
Why are sound waves known as mechanical waves?
The frequency of a source of sound is 100 Hz . How many times does it vibrate in a minute?
sound is a kind of energy then after it gets absorbed what happens of it
What are the uses of multiple reflection of sound ?
Difference between transverse and longitudinal wave. {4 differences}
on what factor does the quality of a sound depend?
Explain how a human ear works
Why bryophytes and pteridophytes grow in moist and shady places? plzz tel me anyone
Name three devices which work on the reflection of sound
a source of sound produces 20 compressions and 20 rarefractions in 0.2 seconds.the distance between a compression and rarefaction is 50cm . find the wavelength,frequency and time period of the wave.
please do answer it fast cuz tommorow is my finals.
on what factor does the quality of sound depend?
working model for sound as project. can suggest?
A simple pendulum is vibrating in an evacuated chamber. It will oscillate with a) constant amplitude b) decreasing amplitude c) increasing amplitude d) none of these
A simple pendulum is vibrating in an evacuated chamber. It will oscillate with
a) constant amplitude b) decreasing amplitude c) increasing amplitude
d) none of these
A man standing between two parallel cliffs and fires a gun and hears two successive echoes after 4 second and 6 second the distance between the cliffs is (Speed of sound 330 ms-1)
(a) 1600 m (b) 1650 cm (c) 1650 m (d)1590 m
how sound are produced
A human heart beats 75 times in a minute.Calculate its frequency
The minimum distance for echo to be heard is 17.2 m.But is there a maximum distance for echo to be heard?
Does the sound of a bomb explosion travel faster than the sound of a humming bee?
a person standing between two vertical cliffs and 640m away from nearest cliff shouted he heard first echo after 4 sec and second echo 3 sec later. calculate
explain how bats use ultrasound to catch the prey
sounds produced by girls are shrill than that of boys.why?
Which wave property determines (a) loudness, (b) pitch?
an engine is approaching a hill at a constant speed. when it is at a distance of 0.9km, it blows a whistle, whose echo is heard by the driver after 5s. if the speed of sound is 340m/s , find the speed of the engine
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Syllabus
What is the difference between loudness and intensity.
Important questions of this chapter sound
1.what do you understand by 1u or 1amu.
2.why is a bell provided with a big outer case?
what is the difference between Echo And Reverberation ?
What r the factors on which the speed of sound depends? Pls ans any1.. experts... quickly..
a person is listening to a tone of 500 Hz sitting at a distance of 450m from the source of the sound . What is the time interval between successive compressions from the source ?
Why does sound become faint with distance?
why we cannot heard echo in small room?
why would it be futile to attempt to detect sounds from other planets, even given the very best in audio detectors?
why are sound waves called mechanical waves?
DIFFERENCE BETWEEN INTENSITY AND LOUDNESS OF SOUND?/
a) Both A and R are true and R is the correct explanation of A
b) Both A and R are true but R is not the correct explanation of A
c) A is true but R is false
d) A is false but R is true
Assertion (A): Transverse waves are not produced in liquids and gases.
Reason (R): Light waves are transverse waves.
The blood pressure in humans is greater at the feet than at the brain. Why?
Explain the working and applications of sonar.
what is the frequency of a sound wave whose time period is 0.05 sec
what are uses of infrasonic sound
Why does sound travel faster in Hydrogen than Oxygen?
a stone is dropped from the top of a tower 500m high into a pond of water at the base of the tower . when is the splash heard ? g = 10m/s2 and speed of sound = 340m/s
A person has a hearing range from 20Hz to 20KHz. what are the typical wavelength of sound waves in air corresponding to these two frequencies?(Speed of sound =344m/s)?
Why is it that children under the age of 5 can hear sounds upto 25 kHz but adults cannot do so?
why are the ceilings of concert halls made curved?
why sound wave are called as longitudinal wave?
a) λ decreases & f remains same
b) both λ & f increases
c) both λ & f decreases
d) λ increases & f does not change
a sound wave has a frequency of 2KHz and wavelength 35 cm.how long it will take to travel 1.5km?
a man stands in between two high raised building & blows a whistle.He hears two successive echos after 0.4s & 1.6s.Calculate the distance between the building.speed of sound is 332m/s.
what are the si unit of amplitude,freqency&wavelength
what are the avantages and disadvantages of echo and reverberation?
A stone is dropped into a well, 44.1 m deep. The sound of the splash is heard 3.13 s after the stone is dropped. Find the velocity os sound in air .
differentiate between crest and trough with more than 3 points (
I want to make a SUPW project please give me some simple ideas.
Which of the following is not a characteristic of sound ?
(A) Pitch
(B) Wavelength
(C) Quality
(D) Loudness
write all formula's in chapter sound ... and defines...???
a sound wave strikes the surface of a reflecting body perpendicularly.the angle of incidence is:
90 45 0 none of these
it should be 45 right?
What is reverberation? How can it be reduced?
waves propogate well in:
rna)unloaded slinky
rnb)loaded slinky
rnc)both a and b
rnd)none of these
A solid weighs 50 gf in air and 44 gf in when completely immersed in water. Calculate
(i) the upthrust (ii) volume of the solid and (iii) the relative density of the solid
establish the relationship between speed of sound, its wavelength and frequency?
help!!!
state the laws of reflection of sound .explain three application based on these laws.
A tuning fork is vibrating at a rate of 30720 times per minute. I f the velocity of sound is 332 m/s , calculate
(a) the frequency of vibration in hertz
(b) the wavelength of the wave produced.
Define echo?Give its two applications.
list three characteristics of sound waves. state the factors on which each of these characteristics depend...
is correct ?
A) We can generate transverse and
longitudinal pulses in a slinky
B) We cannot generate both the above said
pulses in a slinky
C) Only transverse pulse can be generated
in a slinky
D) Only longitudinal pulse can be generated
in a slinky.
what is an echo? what are the two conditions required to hear an echo?
WHAT KIND OF ENERGY TRANSFORMATION TAKES PLACE IN THE FOLLOWING DEVICES
describe an experiment to show that sound cannot pass through vacuum?
a tuning fork has a number 256 marked on it. what does it signify?
how many vibrations will a tuning fork of frequency 280 hz will complete during the time sound travels forward in air by 18 cm.speed of sound in air be 336 m/sec
Write a short note on reverberation and echo.
how is echo formed?????????
The roof and walls of the auditorium are generally covered with sound absorbent materials like compressed fibreboard or draperies. Why is it so?(
1. Sound wave comprises of a series of compressions and rarefactions.
a. What are compressions and rarefactions?
b. In which form of waves-longitudinal or transverse does sound travel?
Can sound travel in vacuum? Why?
Why are sound waves known as mechanical waves?
The frequency of a source of sound is 100 Hz . How many times does it vibrate in a minute?
sound is a kind of energy then after it gets absorbed what happens of it
What are the uses of multiple reflection of sound ?
Difference between transverse and longitudinal wave. {4 differences}
on what factor does the quality of a sound depend?
limbda
Explain how a human ear works
1- amplitude of vibration for S is maximum 2-amplitude of vibration for R is maximum
3- amplitude of vibration for Q is maximum 4- amplitude of vibration for all is same
Why bryophytes and pteridophytes grow in moist and shady places? plzz tel me anyone
Name three devices which work on the reflection of sound
1)Two sound waves having same amplitude but different frequency.
2)Two sound waves different amplitude and also different wavelength.
3)Two sound wave having same frequency but different amplitude.
a source of sound produces 20 compressions and 20 rarefractions in 0.2 seconds.the distance between a compression and rarefaction is 50cm . find the wavelength,frequency and time period of the wave.
please do answer it fast cuz tommorow is my finals.
on what factor does the quality of sound depend?
working model for sound as project. can suggest?
A simple pendulum is vibrating in an evacuated chamber. It will oscillate with
a) constant amplitude b) decreasing amplitude c) increasing amplitude
d) none of these
A man standing between two parallel cliffs and fires a gun and hears two successive echoes after 4 second and 6 second the distance between the cliffs is (Speed of sound 330 ms-1)
(a) 1600 m (b) 1650 cm (c) 1650 m (d)1590 m
how sound are produced
A human heart beats 75 times in a minute.Calculate its frequency
The minimum distance for echo to be heard is 17.2 m.But is there a maximum distance for echo to be heard?
Does the sound of a bomb explosion travel faster than the sound of a humming bee?
a person standing between two vertical cliffs and 640m away from nearest cliff shouted he heard first echo after 4 sec and second echo 3 sec later. calculate
Preparedness and response to COVID-19 have differed at the state level. Kerala has drawn on its experience with the Nipah virus in 2018 to use extensive testing, contact tracing, and community mobilisation to contain the virus and maintain a very low mortality rate. It has also set up thousands of temporary shelters for migrant workers. Odisha's exposure to previous natural disasters meant crisis precautions were already in place and have been repurposed. Maharashtra has used drones to monitor physical distancing during lockdown and applied a cluster containment strategy: if three or more patients are diagnosed, all houses within 3 km are surveyed to detect further cases, trace contacts, and raise awareness. Whether this strategy will be successful is still unclear. The premise relies on there not being community transmission, and there is danger of stigmatisation and coercion. But states deserve much of the credit for India's COVID-19 response.
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The government's sudden enforcement of the lockdown seemed hastily prepared and immediately disadvantaged already vulnerable populations. There has been a mass exodus of migrant workers and concerns are rising about starvation among people who work in the informal economy. Implementing public health measures is difficult in places with overcrowded living conditions and inadequate hygiene and sanitation. Non-COVID-19 health services have been disrupted.?Reports?suggest that the government's efforts to provide financial support and a measure of food security to ease these pressures will be insufficient to meet demand. But better planning and communication could have helped avert this crisis.
Rates of testing have been low (0?28 per 1000 people as of April 20). Capacity issues, absence of political will, and operational feasibility have been to blame. However, efforts to reverse the situation are underway as hundreds of thousands of testing kits have become available, and more testing companies and laboratories have been approved. Testing needs to be expanded exponentially as well as strategically as a tool to provide epidemiological evidence. India's response has also been constrained by a shortage of health workers, but this should be remedied by new reforms that would mobilise additional health-care workers from different sources.
One threat to the COVID-19 response in India is the spread of misinformation driven by fear, stigma, and blame. There have been rising levels of violence against health-care workers and stigmatisation of people with or suspected of having COVID-19, which could impede reporting of illness. The pandemic has also been used to fan anti-Muslim sentiment and violence, after a gathering connected to the group Tablighi Jamaat was identified as being responsible for many cases. A welcome initiative to combat fake news is being led by a group of more than 400 multidisciplinary Indian scientists, who have voluntarily formed Indian Scientists' Response to COVID-19 to fight myths and misinformation about the disease.
In India's favour are its young population (65% aged
explain how bats use ultrasound to catch the prey
sounds produced by girls are shrill than that of boys.why?
Which wave property determines (a) loudness, (b) pitch?
an engine is approaching a hill at a constant speed. when it is at a distance of 0.9km, it blows a whistle, whose echo is heard by the driver after 5s. if the speed of sound is 340m/s , find the speed of the engine