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Question
A convex mirror is used
Options
as a shaving mirror
as a head mirror by a dentist
as a rear view mirror by a driver
as a reflector in torch
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Solution
A convex mirror is used as a rear view mirror by a driver.
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RELATED QUESTIONS
Draw diagram to show the action of convex mirror on a beam of parallel light rays. Mark on this diagram principal axis, focus F, centre of curvature C, pole P and focal length f, of the convex mirror.
A diverging mirror is
(a) a plane mirror
(b) a convex mirror
(c) a concave mirror
(d) a shaving mirror
Two big mirrors A and B are fitted side by side on a wall. A man is standing at such a distance from the wall that he can see the erect image of his face in both the mirrors. When the man starts walking towards the mirrors, he find that the size of his face in mirror A goes on increasing but that in mirror B remains the same.
(a) mirror A is concave and mirror B is convex
(b) mirror A is plane and mirror B is concave
(c) mirror A is concave and mirror B is plane
(d) mirror A is convex and mirror B is concave
At the point of incidence, a line drawn at right angles to the surface, separating the two media, is called the normal.
The image formed by a convex mirror is
State two uses of a convex mirror.
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.
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 |
