Easy
Define the term principal focus for a convex mirror.
(N/A) The principal focus of a convex mirror is a point on its principal axis. When rays of light parallel to the principal axis strike the convex mirror,they diverge after reflection. If these reflected rays are extended backwards,they appear to meet at this specific point on the principal axis. This point is known as the principal focus of the convex mirror.
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Similar Questions
In Section $I$, the magnification of the image obtained by placing an object at various distances in front of a concave mirror is mentioned, and in Section $II$, the type and size of the image are mentioned. Which of the following is the correct pair connecting Section $I$ and Section $II$?
Section $I$ Section $II$ $1.$ Magnification $(-1)$ $a.$ Real and enlarged $2.$ Magnification $(+5)$ $b.$ Real and same size as object $3.$ Magnification $(-5)$ $c.$ Real and diminished $4.$ Magnification $(-0.5)$ $d.$ Virtual and enlarged
| Section $I$ | Section $II$ |
| $1.$ Magnification $(-1)$ | $a.$ Real and enlarged |
| $2.$ Magnification $(+5)$ | $b.$ Real and same size as object |
| $3.$ Magnification $(-5)$ | $c.$ Real and diminished |
| $4.$ Magnification $(-0.5)$ | $d.$ Virtual and enlarged |
Easy
View SolutionState the sign convention used to measure the length of the image and the object.
Easy
View SolutionWhat is the type of the final image,as compared to the object,in the compound microscope?
Easy
View SolutionAn object is placed $50\, cm$ from a lens that produces a virtual image at a distance of $10\, cm$ in front of the lens. Calculate the focal length of the lens. (in $, cm$)
Medium
View Solution$A$ convex lens of focal length $20 \, cm$ can produce a magnified virtual as well as real image. Is this a correct statement? If yes,where shall the object be placed in each case for obtaining these images?
Medium
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