HARD
9th ICSE
IMPORTANT
Earn 100

Draw displacement -time graph of a wave and show on it the amplitude and time period of the wave.

Important Questions on Propagation of Sound Waves

MEDIUM
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 8 - Propagation of Sound Waves>EXERCISE–8(A)>Q 21
Draw a displacement and time graph of a wave and mark on it , the amplitude of the wave by letter a and wavelength by letter λ.
MEDIUM
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 8 - Propagation of Sound Waves>EXERCISE–8(A)>Q 22
How is the wave velocityV, frequency f ,  and wavelength λ of a wave related? Derive the relationship.
MEDIUM
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 8 - Propagation of Sound Waves>EXERCISE–8(A)>Q 23
State two properties of the medium which the speed of sound depends.
EASY
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 8 - Propagation of Sound Waves>EXERCISE–8(A)>Q 24
Arrange the speed of sound in gases Vg, in solids Vs and in liquids Vl in an ascending order.
EASY
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 8 - Propagation of Sound Waves>EXERCISE–8(A)>Q 25
State the speed of light in air
EASY
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 8 - Propagation of Sound Waves>EXERCISE–8(A)>Q 25
State the speed of sound in air.
EASY
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 8 - Propagation of Sound Waves>EXERCISE–8(A)>Q 26
Compare approximately the speed of sound in air, water and steel.
EASY
9th ICSE
IMPORTANT
Concise Physics I.C.S.E Part I For Class 9>Chapter 8 - Propagation of Sound Waves>EXERCISE–8(A)>Q 27
Can sound travel in vacuum?