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प्रश्न
At the point of incidence, a line drawn at right angles to the surface, separating the two media, is called the normal.
विकल्प
True
False
उत्तर
True.
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संबंधित प्रश्न
Define the radius of curvature of spherical mirrors.
Describe with a suitable diagram, how a convex mirror diverges a parallel beam of light rays. Mark clearly the pole, focus and centre of curvature of concave mirror in this diagram.
Which type of mirror has:
positive focal length?
Fill in the following blank with a suitable word:
A ray of light which is parallel to the principal axis of a convex mirror, appears to be coming from ............ after reflection from the mirror.
State three characteristics of the image formed by a convex mirror.
The image formed by a spherical mirror is virtual. The mirror will be:
(a) concave
(b) convex
(c) either concave or convex
(d) metallic
Write true or false
At the point of incidence, a line drawn at right angles to the surface, separating the two media, is called the normal.
Magnification produced by a rear view mirror fitted in vehicles
Higher-Order Thinking Skills:
A convex mirror is in water. What should be the change in its focal length?
Match the following.
| Column I | Column II |
| Convex mirror | Radio telescopes |
| Parabolic mirror | Rear-view mirror |
| Snell’s law | Kaleidoscope |
| Dispersion of light | sin i/sin r =μ |
| Refractive index | Rainbow |
