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A sine wave is travelling in a medium. The minimum distance between the two particles, always having the same speed, is:

1. \(\lambda/4\)

2. \(\lambda/3\)

3. \(\lambda/2\)

4. \(\lambda\)

Subtopic: Wave Motion |

66%

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A sine wave is travelling in a medium. A particular particle has zero displacement at a certain instant. The particle closest to it having zero displacement is at a distance:

1. \(\lambda\)/4

2. \(\lambda\)/3

3. \(\lambda\)/2

4. \(\lambda\)

Subtopic: Wave Motion |

72%

From NCERT

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Which of the following equations represents a wave travelling along \(\mathrm{Y}\)-axis?

1. \(x=A ~sin(ky-\omega t)\)

2. \(y=A ~sin(kx-\omega t)\)

3. \(y=A ~sinky~ cos \omega t\)

4. \(y=A ~cosky~ sin \omega t\)

Subtopic: Wave Motion |

57%

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The equation y = A sin^{2} (kx-wt) represents a wave motion with

1. amplitude A, frequency w/2\(\pi\)

2. amplitude A/2, frequency w/\(\pi\)

3. amplitude 2A, frequency w/4\(\pi\)

4. does not represent a wave motion

Subtopic: Wave Motion |

From NCERT

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Which of the following is a mechanical wave?

1. Radio waves

2. X-rays

3. Light waves

4. Sound waves

Subtopic: Types of Waves |

88%

From NCERT

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A cork floating in a calm pond executes simple harmonic motion of frequency \(\nu\) when a wave generated by a boat passes by it. The frequency of the wave is:

1. \(\nu\)

2. \(\nu/2\)

3. \(2\nu\)

4. \(\sqrt2\)\(\nu\)

Subtopic: Wave Motion |

69%

From NCERT

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Two strings \(A\) and \(B,\) made of same material, are stretched by same tension. The radius of string \(A\) is double of the radius of \(B.\) A transverse wave travels on \(A\) with speed \(v_A\) and on \(B\) with speed \(v_B.\) The ratio \(\frac{v_A}{v_B}=\) ?

1. | \(\frac{1}{2}\) | 2. | \(2\) |

3. | \(\frac{1}{4}\) | 4. | \(4\) |

Subtopic: Speed of Sound |

64%

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Both the strings, shown in the figure, are made of the same material and have the same cross-section. The pulleys are light. The wave speed of a transverse wave in the string \(AB\) is \(v_1\) and in \(CD\) it is \(v_2\). Then \(\dfrac{v_1}{v_2}\) is:

1. \(1\)

2. \(2\)

3. \(\sqrt2\)

4. \(\dfrac{1}{\sqrt{2}}\)

Subtopic: Speed of Sound |

63%

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Velocity of sound in air is \(332\) m/s. Its velocity in the vacuum will be:

1. \(>332\) m/s

2. \(=332\) m/s

3. \(<332\) m/s

4. meaningless

Subtopic: Types of Waves |

63%

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A wave pulse, travelling on a two-piece string, gets partially reflected and partially transmitted at the junction. The reflected wave is inverted in shape as compared to the incident one. If the incident wave has wavelength \(\lambda\) and the transmitted wave\(\lambda\)',

1. \(\lambda\)' > \(\lambda\)

2. \(\lambda\)' = \(\lambda\)

3. \(\lambda\)' < \(\lambda\)

4. nothing can be said about the relation of \(\lambda\) and \(\lambda\)'

Subtopic: Speed of Sound |

51%

From NCERT

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