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प्रश्न
Why do we prefer a convex mirror as a rear-view mirror in vehicles?
उत्तर १
We prefer a convex mirror as a rear-view mirror in vehicles because it gives a wider field of view, which allows the driver to see most of the traffic behind him. Convex mirrors always form a virtual, erect, and diminished image of the objects placed in front of it.
उत्तर २
A driver prefers to use a convex mirror as a rear-view mirror in his vehicle because this type of mirror has a wider field of view. Besides this, the convex mirror always forms virtual, erect and small sized images of the large number of objects at the same time.
संबंधित प्रश्न
Find the focal length of a convex mirror whose radius of curvature is 32 cm.
An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. Find the position and nature of the image.
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.
In a convex spherical mirror, reflection of light takes place at:
(a) a flat surface
(b) a bent-in surface
(c) a bulging-our surface
(d) an uneven surface
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
What type of image/images are formed by:
a concave mirror?
What type of mirror should be used as a shop security mirror?
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.
Light travels in the same straight line path while passing through different media.
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 .............. mirror is obtained on silvering the outer surface of a part of a hollow glass sphere.
The image formed by a convex mirror is
State two uses of a convex mirror.
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?
Nature of the images formed by a convex mirror is _______.
The Convex mirror always forms ______ and ______ image.
