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प्रश्न
State the two laws of reflection of light.
उत्तर
Laws of reflection:
- The incident ray, the reflected ray and the normal ray at the point of incidence, lie in the same plane.
- The angle of incidence i is equal to the angle of reflection r i.e. ∠i = ∠r
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संबंधित प्रश्न
Rays of light incident parallel to the principal axis pass through the focus after reflection from a concave mirror.
A concave mirror converges the light-rays, but a convex mirror diverges them.
The angle between the normal and refracted ray is called
The diagram in figure shows a ray of light AO falling on a rectangular glass slab PQRS. Complete the diagram till the ray of light emerges out of the slab. Label on the diagram the incident ray, the refracted ray and the emergent ray.
A lens always forms an image between the object and the lens. State three characteristics of the image.
You can see your image in polished floors, but not in wooden table because ______.
Say TRUE or FALSE
The image formed in a plane mirror is upside down
Match the following:
| 1. | Real image | a. | Diffuse reflection |
| 2. | Virtual image | b. | An optical device which produces reflection |
| 3. | Mirror | c. | Cannot be taken on screen |
| 4. | A type of light scattering | d. | Can be taken on screen |
Calculate the number of images formed by plane mirrors kept at an angle of 10° to each other.
If magnification is +1.5. The image is ______.
