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Huygens' wave theory allows us to know the:

1. | Wavelength of the wave. |

2. | Velocity of the wave. |

3. | Amplitude of the wave. |

4. | Propagation of wavefront. |

Subtopic: Huygens' Principle |

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When the light diverges from a point source, the shape of the wavefront is:

1. Parabolic.

2. Plane.

3. Spherical.

4. Elliptical.

Subtopic: Huygens' Principle |

83%

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Huygen's principle for secondary wavelets may be used to:

1. | explain Snell's law. |

2. | find the velocity of light in vacuum. |

3. | find a new position of a wavefront. |

4. | both (1) & (3) are correct. |

Subtopic: Huygens' Principle |

70%

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By Huygen's wave theory of light, we cannot explain the phenomenon of:

1. | Interference |

2. | Diffraction |

3. | Photoelectric effect |

4. | Polarisation |

Subtopic: Huygens' Principle |

73%

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Which of the following is not true?

1. | The speed of light is dependent on the colour of the light. |

2. | The speed of violet light is less than the speed of the red light in glass. |

3. | The frequency of light never depends upon the property of the medium. |

4. | When the light diverges from a point source, the shape of the wavefront is plane. |

Subtopic: Huygens' Principle |

73%

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Light travels faster in the air than in glass. This is in accordance with:

1. | the wave theory of light. |

2. | the corpuscular theory of light. |

3. | neither (1) nor (2) |

4. | both (1) and (2) |

Subtopic: Huygens' Principle |

57%

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The plane wavefront is incident on a spherical mirror as shown. The reflected wavefront will be:

1. | 2. | ||

3. | 4. |

Subtopic: Huygens' Principle |

52%

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On superposition of two waves \(y_{1}=3sin\left ( \omega t-kx \right )\) and \(y_{2}=4sin\left ( \omega t-kx+\frac{\pi }{2} \right )\) at a point, the amplitude of the resulting wave will be:

1. 7

2. 5

3. $\sqrt{7}$

4. 6.5

Subtopic: Superposition Principle |

85%

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Two superposing waves are represented by the following equations:

\({\mathrm{y}_1=5 \sin 2 \pi(10 \mathrm{t}-0.1 \mathrm{x}), \mathrm{y}_2=10 \sin 2 \pi(10 \mathrm{t}-0.1 \mathrm{x}).}\)

Ratio of intensities $\frac{{\mathrm{I}}_{\mathrm{max}}}{{\mathrm{I}}_{\mathrm{min}}}$ will be:

1. 1

2. 9

3. 4

4. 16

Subtopic: Superposition Principle |

85%

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If the ratio of amplitudes of two coherent sources producing an interference pattern is 3 : 4, the ratio of intensities at maxima and minima is:

1. 3 : 4

2. 9 : 16

3. 49 : 1

4. 25 : 7

Subtopic: Superposition Principle |

81%

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