Select Board & Class
1 hz = how many decibels?
what is the relationship between frequency and time period
give 15 musical instruments with their names and their vibrating parts?
give 4 advantages and disadvantages of loudspeakers?
What is the difference between Noise and Music?
Which of the following voices is likely to have maximum frequency?
some steps to reduce noise pollution?
a spoon can sound like a bell. No, this is not riddle. it's science. prove it?
suppose you are going in a jet plane,and one of the windows breaks due to an accident.what problems do you think you will face?
Explain the principle on which Jaltarang works.
5 differences between loudness and pitch
an explosion occurs on the moon.will it be
b)heard on the earth instantly or after sometime?
Why the voice of men, women and children are different?
write a short note on noise pollution and i need it fast please
What is the difference between Vibration and Oscillation ?
How do loudness and pitch of sound depend on amplitude and frequency respectively?
1. In which medium speed of sound is maximum an din which minimum ?
2. A pendulum makes 16 oscillations in 2 seconds . What is the frequency of the pendulum ?
what are the vibrating part of following objects
a.harmonium b.tabla c.flute d. guitar e.ghatam f.manjira g.noot h.kartal i.sitar j.striking a pan
What are the functions of Malleus, Incus and Stapes; the bones in the inner ear?
What are longitudinal and transverse wave? and is Sound a longitudinal wave?
identify the sources of noise pollution in your locality. Discuss with your parents, friends and neighbours. Suggest how to control noise pollution. Prepare a brief report and present it in the class.
a spoon can sound like a bell prove it
What is amplitude,frequency and time period?
what is amptitude
Which of the following voices is likely to have minimum frequency.
(a) A man (b) A baby girl (c) A baby boy (d) A woman
describe an experiment to show that sound can travel through liquids.
name any 7 musical instruments and their vibrating parts
What are ultrasonic sounds? Write some applications of ultrasonic waves.
what is the SI unit of vibration ?
the loudness of a lions roar is much greater than a birds chirp.what causes the difference in loudness?????
pls answer fast
compare the transmission of sound in solids , liquids and gases?
give two uses of ultrasonic vibrations in industry .
How can you say that sound is a form of energy? Explain with examples.
any 5 difference between audible and inaudible sound plz do it quick.
What is the MAIN advantage of having two ears rather than only one to hear with?A. The clarity of the sound heard increases with two ears.B. The second ear is a backup in case the first ear failsC. The direction of sounds can be judged with two ears.D. The symmetry of the human face is maintained.
What is audible and inaudible sounds
Why do our steps do not produce loud sound if we walk on carpet floor?
In the game of hide and seek how the blind folded person guess ho is the nearest person to him
If we want to hear a train approaching from far away , why it is more convenient to put th ear to the track ?
how is sound produced in mridangam
how do human beings produce sound
list sources of noise pollution?????
what are two important properties of sound
Sound travels through air by means of ____________ (compression/depression) and __________ (rarefactions/refractions).
1 give reasons
A) Cinema halls and auditoriums are carpeted and their walls are coated with rough material
b) Echoes are not formed in our classrooms
The amplitude of the sound wave decides on its _________.
Write an activity to prove that sound needs a medium for propogation .
I searched it on the study material but realistic activities are needed inculing
2) Materials Required
4) Observation / Conclusion
Thanks in adance and don't forget to wish me 'All The Best' for the exam . Tomorrow it will take place .
what are disadvantages of sound pollution
How to make ektara at home
what is sound ?
define sound .
difference between audible and inaudible sound
explain how noise pollution is harmful to human beings?
what is noise pollution
what is the difference between time period and frequency
1. What are transverse and longitudinal waves? Explain with suitable examples.
2. What is a progressive wave? What is a plane progressive harmonic wave? Establish
the displacement relation for harmonic wave travelling along the positive direction of x-
3. State and explain the principle of superposition of waves.
4. What are stationary waves? What is the necessary condition for the formation of
5. Obtain an expression for a stationary wave formed by two sinusoidal waves travelling
along the same path in opposite directions and obtain the positions of nodes and
6. Prove analytically that in the case of an open organ pipe of length L, the frequencies of
vibrating air column are given by v= n(u/2L), where n is an integer.
7. What are beats? What is the essential condition for the formation of beats?
8. Derive an expression for the apparent frequency of the sound, when the observer
moves towards a stationary source of sound. Hence write the expression for the"
apparent frequency when the observer moves away from the stationary source.
9.Obtain an expression for the observed frequency of the sound produced by a source
when both observer and source are in motion and the medium at rest.
10. Define the term wave motion.
11 . What are mechanical waves?
12. Which types of waves do not require a material medium for their propagation?"
13.Amongst solids, liquids and gases, in which type of media, transverse wave motion is
14. Among solids, liquids and gases, in which type of media, longitudinal wave motion can
15 How far the consecutive nodes are separated from each other?
If the amplitude is increased by 3 times , by how much does the loudness increase?
WHAT ARE NAMES OF THE 3 TINY BONES INSIDE THE EAR??????
explain the working of jaltrang
time taken to complete one oscillation is called
what is the frequency of radio waves??
how humans are able to produce radio waves on moon?? describe in brief...
the factor on which distance travelled by sound depends
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