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प्रश्न
The focal length of a convex mirror is equal to its radius of curvature.
पर्याय
True
False
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उत्तर
False.
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संबंधित प्रश्न
Find the focal length of a convex mirror whose radius of curvature is 32 cm.
Describe with a suitable diagram, how a convex mirror diverges a parallel beam of light rays. Mark clearly the pole, focus and centre of curvature of concave mirror in this diagram.
Which mirror has a wider field of view?
Where would the image be formed by a convex mirror if the object is placed:
between infinity and pole of the mirror?
Draw labelled ray-diagrams to show the formation of image in both the case.
Give two uses of a convex mirror. Explain why you would choose convex mirror for these uses.
State three characteristics of the image formed by a convex mirror.
Explain why, a real image can be projected on a screen but a virtual image cannot.
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 boy is standing at a distance of 3m in front of a plane mirror. The distance between the boy and his image is ______m.
Assertion: A real image cannot be produced by plane or convex mirror.
Reason: The focal length of a convex mirror is always taken as positive.
