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प्रश्न
What kind of mirrors are used in big shopping centres to watch the activities of the customers?
उत्तर
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.
संबंधित प्रश्न
Which mirror always produces a virtual, erect and diminished image of an object?
State whether the following statement is true or false:
A diverging mirror is used as a rear-view mirror.
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.
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
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.
Nature of the images formed by a convex mirror is _______.
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.
The field of view is maximum for ______.
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.
Why a convex mirror is preferred for rearview mirrors in cars?
