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प्रश्न
The angle formed between the normal and the refracted ray is known as the angle of incidence.
विकल्प
True
False
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उत्तर
False.
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संबंधित प्रश्न
Why do we prefer a convex mirror as a rear-view mirror in vehicles?
An object is placed at a distance of 40 cm in front of a convex mirror of radius of curvature 40 cm. List four characteristics of the image formed by the mirror.
State the relation between object distance, image distance and focal length of a spherical mirror (concave mirror or convex mirror).
Which type or mirror is usually used as a rear-view mirror in motor cars?
Where would the image be formed by a convex mirror if the object is placed:
at infinity?
Draw labelled ray-diagrams to show the formation of image in both the case.
How will you distinguish between a plane mirror, a concave mirror and a convex mirror without touching them?
The image formed by a spherical mirror is virtual. The mirror will be:
(a) concave
(b) convex
(c) either concave or convex
(d) metallic
Assertion: A real image cannot be produced by plane or convex mirror.
Reason: The focal length of a convex mirror is always taken as positive.
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 |
