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. |
When the light diverges from a point source, the shape of the wavefront is:
1. Parabolic.
2. Plane.
3. Spherical.
4. Elliptical.
By Huygen's wave theory of light, we cannot explain the phenomenon of:
1. | Interference |
2. | Diffraction |
3. | Photoelectric effect |
4. | Polarisation |
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. |
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. |
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. |
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 \((2)\) |
1. | \(\alpha>\beta\) |
2. | \(\beta>\alpha\) |
3. | \(\alpha=\beta\) |
4. | \(\alpha~\&~\beta \) cannot be predicted. | the relation between
The plane wavefront is incident on a spherical mirror as shown. The reflected wavefront will be:
1. | 2. | ||
3. | 4. |
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. \(16\)