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प्रश्न
Which type or mirror is usually used as a rear-view mirror in motor cars?
उत्तर
A diverging mirror, i.e. convex mirror, is used as a rear-view mirror in motor cars, as it has a wider area of view, and always forms virtual, erect and small-sized images of a large number of objects at the same time.
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संबंधित प्रश्न
An object is placed at a distance of 30 cm in front of a convex mirror of focal length 15 cm. Write four characteristics of the image formed by the mirror.
Find the nature and focal length of a spherical mirror whose radius of curvature is +24 cm.
Whatever be the position of the object, the image formed by a mirror is virtual, erect and smaller than the object. The mirror then must be:
(a) plane
(b) concave
(c) convex
(d) either concave or convex
The diagrams show the appearance of a fork when placed in front of and close to two mirrors A and B, turn by turn.
Figure
(a) Which mirror is convex
(b) Which mirror is concave
Give reasons for your choice.
An object is kept at a distance of 5 cm in front of a convex mirror of focal length 10 cm. Calculate the position and magnification of the image and state its nature.
An object is placed at a distance of 6 cm from a convex mirror of focal length 12 cm. Find the position and nature of the image.
A .............. mirror is obtained on silvering the outer surface of a part of a hollow glass sphere.
A ............ mirror always forms a virtual image.
The diagram given below in fig shows a ray of light AO falling on a surface separating two media. Draw the refracted ray in each, case.
Nature of the images formed by a convex mirror is _______.
