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प्रश्न
An image formed by a lens is erect. Such an image could be formed by a
पर्याय
convex lens provided the image is smaller than object.
concave lens provided the image is smaller than object.
concave lens provided the image is larger than object.
concave lens provided the image is of the same size.
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उत्तर
concave lens provided the image is smaller than object.
Explanation:
A concave lens provided the image is smaller than an object. The image of an object created by a concave lens is erect, virtual and diminished.
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संबंधित प्रश्न
With the help of an appropriate ray diagram, state the sign conventions for reflection by a spherical mirror.
Draw a ray diagram to show the path of the reflected ray corresponding to an incident ray of light parallel to the principal axis of a convex mirror and show the angle of incidence and angle of reflection on it.
A concave mirror produces three times magnified image on a screen. If the object is placed 20 cm in front of the mirror, how far is the screen from the object.
An object is placed at a distance of 12 cm in front of a concave mirror of radius of curvature 30 cm. List four characteristics of the image formed by the mirror.
What is a spherical mirror? Distinguish between a concave mirror and a convex mirror.
The real image formed by a concave mirror is smaller than the object if the object is:
(a) between centre of curvature and focus
(b) at a distance greater than radius of curvature
(c) at a distance equal to radius of curvature
(d) at a distance equal to focal length
If the image formed is always virtual, the mirror can be:
(a) concave or convex
(b) concave or plane
(c) convex or plane
(d) only convex
Name the mirror(s) that can give (i) an erect and enlarged image, (ii) same sized, inverted image
Define principal focus of the concave mirror.
Which type of mirror is used in the following?
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