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 \((2)\) |
By Huygen's wave theory of light, we cannot explain the phenomenon of:
1. | Interference |
2. | Diffraction |
3. | Photoelectric effect |
4. | Polarisation |
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. |
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. |
When the light diverges from a point source, the shape of the wavefront is:
1. Parabolic
2. Plane
3. Spherical
4. Elliptical