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प्रश्न
A diverging lens is used in:
(a) a magnifying glass
(b) a car to see objects on rear side
(c) spectacles for the correction of short sight
(d) a simple camera
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उत्तर
Spectacles for the correction of short sight
A diverging lens is used in spectacles to correct short-sightedness.
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संबंधित प्रश्न
Explain the following term related to spherical lenses:- aperture
Image formed by a convex ______ is always virtual and smaller in size.
We can obtain a real, enlarged and inverted image by a concave mirror.
Define Radius of curvature of the spherical mirror
What is the name of the phenomenon in which the right side of an object appears to be the left side of the image in a plane mirror?
Name the kind of mirror used to obtain
(a) a real and enlarged image
(b) a virtual and enlarged image
(c) a real and diminished image, and
(d) a virtual and diminished image.
Draw suitable diagrams to illustrate the action of (i) concave mirror and (ii) convex mirror on a beam of light incident parallel to the principal axis.
Figure shows a concave mirror with its pole at P, focus F and centre of curvature C. Draw ray diagram to show the formation of image of an object OA.
Name the mirror which always produces an erect and virtual image. How is the size of image related to the size of object?
Write the spherical mirror's formula and explain the meaning of each symbol used in it.
How will you distinguish between a plane mirror, a concave mirror and a convex mirror, without touching them?
For an incident ray directed towards centre of curvature of a spherical mirror the reflected ray:
The image formed by a convex mirror is
Select the correct option:
Which mirror is used in periscope?
AB is the object, A1B1 is its image. MM' is the position of the mirror. Complete the ray diagram and find the position of the center of curvature and focus of the mirror. Also, measure the focal length.
Define the term Normal.
Which of the following has curved reflecting surface?
