Advertisements
Advertisements
प्रश्न
State two uses of a convex mirror.
Advertisements
उत्तर
Two USES OF CONVEX MIRROR:
- It is used as a REARVIEW MIRROR.
- It is used as a VIGILANCE MIRROR
- It is used as a REFLECTOR IN STREET LAMPS
APPEARS IN
संबंधित प्रश्न
Why do we prefer a convex mirror as a rear-view mirror in vehicles?
If the focal length of a spherical mirror is 12.5 cm, its radius of curvature will be:
(a) 25 cm
(b) 15 cm
(c) 20 cm
(d) 35 cm
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.
A driver uses a convex mirror as a rearview mirror. Explain the reason with the help of a ray diagram.
A 5 cm tall object is placed perpendicular to the principle axis of a convex lens of focal length 12 cm. The distance of the object from the lens is 8 cm. Using the lens formula, find the position, size and nature of the image formed.
Why are the mirrors fitted on the outside of cars convex?
When the reflecting surface is curved outwards the mirror formed will be ______.
The image formed by these mirrors is ______ than the object.
A boy is standing at a distance of 3m in front of a plane mirror. The distance between the boy and his image is ______m.
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 |
