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 In an experiment to find the speed of waves in a rope, a standing wave pattern is established as shown in diagram below. The vibrating end of rope makes 90 vibrations per minute. The speed of the waves is
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  • a)
    4 m/s
  • b)
    3 m/s
  • c)
    6 m/s
  • d)
    2 m/s
Correct answer is 'C'. Can you explain this answer?
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Verified Answer
In an experiment to find the speed of waves in a rope, a standing wave...
90 vibrations in 60 seconds mans _frequency, f =1.5Hz 
According to diagram1.5 Hz is covered in 6m  wavelength, ω = 4m 
We have qmed ,v = f x ω = 1.5 x 4 = 6m/s 
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In an experiment to find the speed of waves in a rope, a standing wave...
Speed of wave = length of a wave * frequency
so 60/1.5 *90/60 =6m/sec
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In an experiment to find the speed of waves in a rope, a standing wave...
From 1 part looks it is open and other is fixed end
but it is extended beyond crest or upper region will see the first node lying on axis not from starting but 2nd point 1 st node from there till fixed point length is lambda by 2 +lamda by 2 = lambda.,,,,,
now starting position it will be lamda by 2 because it extends beyond half crest,,,,
so total is lambda +lambda /2=3lamda /2 ,,,
3lamda /2 =6,,
lamda =4,,,

90/60= 3/2= frequency;;;
3/2 *4 =v= f*lamda=6
,,,,,in 1st looks like half but it is not half becoz it extends so lamda / 2
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Attempt All sub parts from each question.Longitudinal and transverse wave: Longitudinal Waves are defined as waves those are capable of displacing the medium in a direction either in the direction of the waves or opposite. Longitudinal mechanical waves are known as compressional waves. This is because these mechanical waves produce a lot of compression and rarefaction while travelling through medium. These waves are also called as pressure waves as there is an increase and decrease in pressure while travelling. Sound Waves like vibrations, P-Waves created through earthquakes, etc., are some kinds of longitudinal waves. A transverse wave is defined as the wave that moves in the perpendicular direction of the vibration. One of the most important examples of transverse waves includes the waves created by the drum's beating. The membrane of the drum moves perpendicular to the surface. Another example of a transverse wave is light. Transverse waves travels through crests and troughs. Transverse waves are mostly present in solids those have profound elasticity. In some cases, when there is a deformation in the material, the wave is called a shear wave.Q. Which wave produces compressions and rarefactions in the medium?

Attempt All sub parts from each question.Longitudinal and transverse wave: Longitudinal Waves are defined as waves those are capable of displacing the medium in a direction either in the direction of the waves or opposite. Longitudinal mechanical waves are known as compressional waves. This is because these mechanical waves produce a lot of compression and rarefaction while travelling through medium. These waves are also called as pressure waves as there is an increase and decrease in pressure while travelling. Sound Waves like vibrations, P-Waves created through earthquakes, etc., are some kinds of longitudinal waves. A transverse wave is defined as the wave that moves in the perpendicular direction of the vibration. One of the most important examples of transverse waves includes the waves created by the drum's beating. The membrane of the drum moves perpendicular to the surface. Another example of a transverse wave is light. Transverse waves travels through crests and troughs. Transverse waves are mostly present in solids those have profound elasticity. In some cases, when there is a deformation in the material, the wave is called a shear wave.Q. Which wave is also known as compressional wave?

Attempt All sub parts from each question.Longitudinal and transverse wave: Longitudinal Waves are defined as waves those are capable of displacing the medium in a direction either in the direction of the waves or opposite. Longitudinal mechanical waves are known as compressional waves. This is because these mechanical waves produce a lot of compression and rarefaction while travelling through medium. These waves are also called as pressure waves as there is an increase and decrease in pressure while travelling. Sound Waves like vibrations, P-Waves created through earthquakes, etc., are some kinds of longitudinal waves. A transverse wave is defined as the wave that moves in the perpendicular direction of the vibration. One of the most important examples of transverse waves includes the waves created by the drum's beating. The membrane of the drum moves perpendicular to the surface. Another example of a transverse wave is light. Transverse waves travels through crests and troughs. Transverse waves are mostly present in solids those have profound elasticity. In some cases, when there is a deformation in the material, the wave is called a shear wave.Q. Which wave is also known as pressure wave?

Attempt All sub parts from each question.Longitudinal and transverse wave: Longitudinal Waves are defined as waves those are capable of displacing the medium in a direction either in the direction of the waves or opposite. Longitudinal mechanical waves are known as compressional waves. This is because these mechanical waves produce a lot of compression and rarefaction while travelling through medium. These waves are also called as pressure waves as there is an increase and decrease in pressure while travelling. Sound Waves like vibrations, P-Waves created through earthquakes, etc., are some kinds of longitudinal waves. A transverse wave is defined as the wave that moves in the perpendicular direction of the vibration. One of the most important examples of transverse waves includes the waves created by the drum's beating. The membrane of the drum moves perpendicular to the surface. Another example of a transverse wave is light. Transverse waves travels through crests and troughs. Transverse waves are mostly present in solids those have profound elasticity. In some cases, when there is a deformation in the material, the wave is called a shear wave.Q. Beating of drums produces

Attempt All sub parts from each question.Longitudinal and transverse wave: Longitudinal Waves are defined as waves those are capable of displacing the medium in a direction either in the direction of the waves or opposite. Longitudinal mechanical waves are known as compressional waves. This is because these mechanical waves produce a lot of compression and rarefaction while travelling through medium. These waves are also called as pressure waves as there is an increase and decrease in pressure while travelling. Sound Waves like vibrations, P-Waves created through earthquakes, etc., are some kinds of longitudinal waves. A transverse wave is defined as the wave that moves in the perpendicular direction of the vibration. One of the most important examples of transverse waves includes the waves created by the drum's beating. The membrane of the drum moves perpendicular to the surface. Another example of a transverse wave is light. Transverse waves travels through crests and troughs. Transverse waves are mostly present in solids those have profound elasticity. In some cases, when there is a deformation in the material, the wave is called a shear wave.Q. Which wave is also known as shear wave?

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In an experiment to find the speed of waves in a rope, a standing wave pattern is established as shown in diagram below. The vibrating end of rope makes 90 vibrations per minute. The speed of the waves isa)4 m/sb)3m/sc)6m/sd)2m/sCorrect answer is 'C'. Can you explain this answer?
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