Advertisements
Advertisements
Question
What kind of mirrors are used in big shopping centres to watch the activities of the customers?
Solution
Convex mirrors are used in big shopping centres to watch the activities of the customers, as these mirrors have a wider field of view and always form virtual, erect and small-sized images of a large number of objects at the same time.
RELATED QUESTIONS
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
Which type or mirror is usually used as a rear-view mirror in motor cars?
Draw a labelled ray diagram to show the formation of image in a convex-mirror when the object is at infinity. Mark clearly the pole and focus of the mirror in the diagram.
The image formed by a spherical mirror is virtual. The mirror will be:
(a) concave
(b) convex
(c) either concave or convex
(d) metallic
A boy is standing in front of and close to a special mirror. He finds the image of his head bigger than normal, the middle part of his body of the same size, and his legs smaller than normal. The special mirror is made up of three types of mirrors in the following order from top downwards:
(a) Convex, Plane, Concave
(b) Plane, Convex, Concave
(c) Concave, Plane, Convex
(d) Convex, Concave, Plane
An object 1 cm tall is placed 30 cm in front of a convex mirror of focal length 20 cm. Find the size and position of the image formed by the convex mirror.
A driver uses a convex mirror as a rearview mirror. Explain the reason with the help of a ray diagram.
Why are the mirrors fitted on the outside of cars convex?
The mirror used as rear-view mirror in vehicles ______.
An object at a distance of +15 cm is slowly moved towards the pole of a convex mirror. The image will get ______.
