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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 the 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 |
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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%
Level 2: 60%+
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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 |
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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 |
76%
Level 2: 60%+
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Given below are two statements:
| Assertion (A): | Corpuscular theory fails in explaining the velocities of light in air and water. |
| Reason (R): | According to corpuscular theory, light should travel faster in denser media than in rarer media. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A). |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | (A) is False but (R) is True. |
Subtopic: Huygens' Principle |
64%
Level 2: 60%+
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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 |
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Sound waves travel faster in water than in air. Imagine a plane sound wavefront incident at an angle \(\alpha\) at the air-water interface; the refracted wavefront making an angle \(\beta\) with the interface. Then,
| 1. | \(\alpha>\beta\) |
| 2. | \(\beta>\alpha\) |
| 3. | \(\alpha=\beta\) |
| 4. | the relation between \(\alpha~\&~\beta \) cannot be predicted. |
Subtopic: Huygens' Principle |
Level 3: 35%-60%
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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 |
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Level 3: 35%-60%
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Two superposing waves are represented by the following equations: \(y_1=5 \sin 2 \pi(10{t}-0.1 {x}), {y}_2=10 \sin 2 \pi(10{t}-0.1 {x}).\)
The ratio of intensities \(\dfrac{I_{max}}{I_{min}}\) will be:
1. \(1\)
2. \(9\)
3. \(4\)
4. \(16\)
Subtopic: Superposition Principle |
85%
Level 1: 80%+
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