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प्रश्न
A convex mirror is used
पर्याय
as a shaving mirror
as a head mirror by a dentist
as a rear view mirror by a driver
as a reflector in torch
उत्तर
A convex mirror is used as a rear view mirror by a driver.
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संबंधित प्रश्न
An object is placed at a distance of 40 cm in front of a convex mirror of radius of curvature 40 cm. List four characteristics of the image formed by the mirror.
What type of image/images are formed by:
a concave mirror?
What would your image look like if you stood close to a large:
convex mirror?
Draw a labelled ray diagram to show the formation of image of an object by a convex mirror. Mark clearly the pole, focus and centre of curvature on the diagram.
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.
Name two factors on which the focal length of a lens depends.
At the point of incidence, a line drawn at right angles to the surface, separating the two media, is called the normal.
To determine the focal length of a convex lens by obtaining a sharp image of a distant object we generally follow the following steps which are not in proper sequence.
(a) Hold the lens between the object and the screen
(B) Measure the distance between the lens and the screen
(C) Select a well lit distant object
(D) Place a screen opposite to the object on the lab table
(e) Adjust the position of the lens to form a sharp image
The correct sequence of these steps is:
(A) c, a, d, e, b
(B) c, d, a, e, b
(C) c, d, e, a, b
(D) c, a, e, d, b
Identify the device used as a spherical mirror or lens in following case, when the image formed is virtual and erect in case.
Object is placed between the focus and device, image formed is enlarged and on the same side as that of the object.
A convex rearview mirror is preferred over a plane mirror in a car. Why?
