The ……………………………… receives the vibrations coming from the membrane and converts them into electrical signals which are sent to the brain through the nerve.
- ✓Cochlea
- BTympanic cavity
- CStapes
- DPinna
Answer: A.
View full solution →Question types
Study of Sound question types
84 questions across 12 question groups — pick any mix to generate a Science paper with step-by-step answer keys.
84
Questions
12
Question groups
5
Question types
01
Write the Correct Alternative.
9 Q→02Find the odd one out.
4 Q→03Answer the following in one sentece.
21 Q→04Name The Following.
8 Q→05Answer the following questions in detail.
15 Q→06Distinguish Between.
6 Q→07Answer the following question.
6 Q→08Give Scientific Reason.
6 Q→09Answer the following question.
5 Q→10Fill In The Blanks.
1 Q→11Match The Columns/pair.
2 Q→12Observe The Picture And Explain.
1 Q→Sample Questions
Study of Sound questions
One sample from each question group in this chapter. Select any group above to see the full set with answer keys.
……………………………… are used in sonography.
- ✓High frequency ultrasound
- BStationary waves
- CHigh frequency infrasound
- DHigh frequency micro waves
Answer: A.
View full solution →The loudness of a sound depends upon ……………………………… .
- ✓Amplitude
- BSpeed
- CDensity
- DWavelength
Answer: A.
View full solution →Sound waves with frequency greater than 20 kHz are called ……………………………… .
- AInfrasound
- ✓Ultrasound
- CSonic
- DDamped sound
Answer: B.
View full solution →The velocity of sound is inversely proportional to the ……………………………… .
- APressure
- BSquare root of temperature
- ✓Square root of density
- DHumidity
Answer: C.
View full solution →Temperature, density, molecular weight, pressure
Submarines, icebergs, internal organ, sunken ships.
Clothes, paper, curtains, mirror
Bats, rats, cats, dolphins
Define : Velocity of wave
Define : longitudinal waves
Define : Transverse waves
Define : Echo
Define : Time Period (T)
Name the living beings that can produce ultrasound.
Any two examples in which infrasound is produced.
Three major parts of the ear.
The matter or substance through which sound gets transmitted.
A method to obtain images of internal organs of the human body.
The audible range of sound is 20 Hz to 20000 Hz. At 22°C in air speed of sound is 344 mIs. Express the range of sound in terms of wavelength by calculating the respective values.
Calculate distance travelled by a sound wave having frequency 1000 Hz and wavelength 0.25 m, if it travels for 5 seconds in a certain medium.
How long will it take for a sound wave of 25 cm wavelength and 1.5 kHz frequency, to travel a distance of 1.5 km?
Sound waves of wavelength 1 cm have a velocity of 340 mIs in air. What is their frequency? Can this sound be heard by the human ear?
(1) In the above activity, what will happen if you lift one of the tubes to some height?
(2) Measure the angle of incidence 01 and the angle of reflection 02. Try to see if they are related in any way.
Suppose you and your friend are on the moon. Will you be able to hear any sound
Three sounds 5 Hz, 500 Hz and 50,000 Hz are produced by different sources.
(a) Which sound will be heard by humans?
(b) Which sounds may be produced by bats?
(c) Which sounds may be produced by elephants?
(a) Which sound will be heard by humans?
(b) Which sounds may be produced by bats?
(c) Which sounds may be produced by elephants?
What is the real cause of sound production? Explain with examples.
In which case the sound is high pitch?
Transverse waves and Longitudinal waves
Answer:
Answer:
Hydrogen gas is filled in two identical bottles, A and B, at the same temperature. The mass of hydrogen in the two bottles is $12\ gm$ and $48$ gin respectively. In which bottle will sound travel faster? How many timés as fast as the other?
View full solution →A person standing near a hill fires a gun and hears the echo after 1 second. If speed of sound in air is 340 m/s. Find the distance between the hill and the person.
Ultrasonic waves are transmitted downwards into the sea with the help of a SONAR. The reflected sound is received after 4 s. What is the depth of the sea at that place? (Velocity of sound in seawater = 1550 m/s)
What should be the dimensions and the shape of classrooms so that no echo can be produced there?
Study the construction of the Golghumat at Vijapur and discuss the reasons for the multiple echoes produced there.
Sound travels faster in iron than in air.
A SONAR system is installed in a ship.
Bats can navigate in dark.
We cannot hear the echo produced in a classroom.
The intensity of reverberation is higher in a closed and empty house.
Write a short note on Sonography. How is it misused?
Write a short note on SONAR
Explain with the help of a neat labelled diagram the working of human ear.
What are the uses of ultrasonic sound?
What are the factors on which velocity of sound in gaseous medium depend?
Fill in the blanks and explain.
\
| Column A’ | Column ‘B’ | Column C |
| (1) Amplitude | (a) T | (i) Pitch of sound |
| (2) Frequency | (b) A | (ii) Loudness of sound |
| (3) Wavelength | (c) υ | (iii) Reciprocal of frequency |
| (4) Time period | (d) λ | (iv) v/υ |
| Column ‘A’ | Column B’ | Column C |
| (1) Transverse wave | (a) Particles oscillate parallel to direction of propagation | (i) Wave produced in a slinky |
| (2) Longitudinal wave | (b) Particles oscillate perpendicular to direction of propagation | (ii) Frequency less than 20 Hz |
| 3) Ultrasound | (c) Echo formation is heard under particular conditions | (iii) Wave produced in string |
| (4) Infrasound | (d) High frequency waves | (iv) Frequency between 20 Hz to 20000 Hz |
| (5) Audible frequency | (e) Low frequency waves | (v) Frequency greater than 20000 Hz |
Observe the graph/ diagram and discuss your observation.
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