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प्रश्न
According to cartesion sign convention, which mirror and which lens has negative focal length?
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उत्तर
Concave mirror is having a negative focal length.
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संबंधित प्रश्न
State two positions in which a concave mirror produces a magnified image of a given object. List two differences between the two images.
Name the mirror that can give an erect and enlarged image of an object.
With the help of a labelled ray diagram, describe how a converging mirror can be used to give an enlarged upright image of an object.
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
According to New Cartesian Sign Convention:
(a) focal length of concave mirror is positive and that of convex mirror is negative
(b) focal length of both concave and convex mirrors is positive
(c) focal length of both concave and convex mirrors is negative
(d) focal length of concave mirror is negative and that of convex mirror is positive
Why does obtaining the image of the sun on paper with the help of a concave mirror burn the paper?
Large ______ mirrors are used to concentrate sunlight to produce heat in solar furnaces.
Name the mirror(s) that can give (i) an erect and enlarged image, (ii) same sized, inverted image
What is a concave and convex mirror?
Write the uses of the concave mirror.
