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प्रश्न
The distance from the pole to the focus is called ______.
विकल्प
pole length
focal length
principal axis
None of the above
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उत्तर
The distance from the pole to the focus is called focal length.
Explanation:
The distance from the pole (the center of a spherical mirror or lens) to the focus (the point where light rays converge or appear to diverge) is called the focal length.
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संबंधित प्रश्न
Define (a) centre of curvature (b) radius of curvature (c) pole (d) principal axis, and (e) aperture, of a spherical mirror with the help of a labelled diagram
Name the spherical mirror which can produce a real and diminished image of an object.
The shiny outer surface of a hollow sphere of aluminium of radius 50 cm is to be used as a mirror:
Which type of spherical mirror will it provide?
Name the mirrors shown in Figure (a) and (b).
How is the focal length of a spherical mirror related to its radius of curvature?
Define the following term:
spherical mirror
Complete the following diagrams shown in the following figures by drawing the reflected rays.
Complete the following diagrams shown in the below figure by drawing the reflected ray for each incident ray.
A spherical mirror whose reflecting surface is curved outwards is called ______ mirror.
