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प्रश्न
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उत्तर
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संबंधित प्रश्न
Give one use each of a concave and a convex mirror.
What happens when a ray of light falls normally (or perpendiculary) on the surface of a plane mirror?
The letter F is placed in front of a plane mirror:
What is the name of the phenomenon involved?
The diverging lens in part (a) is replaced by a converging lens also of focal length 100 mm. The object remains in the same position and an image is formed by the converging lens. Compare two properties of this image with those of the image formed by the diverging lens in part (a).
What do you understand by the focus and focal length of a spherical mirror? Show them on the separate diagrams for each of a concave mirror and a convex mirror.
The following Figure shows a concave mirror MM' on which a ray of light incident from a point P gets reflected to meet the principle axis at O.
(a) Find, by construction, the position of the centre of curvature of the concave mirror.
(b) Write down the value for the radius of curvature of the mirror.
(c) Calculate the focal length of the mirror.
(d ) Which relation is used in deducing the focal length from the radius of curvature?
Name the two types of spherical mirrors.
What is the focal length (f) of a mirror?
What is “aperture”?
