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प्रश्न
Figure shows a concave mirror with its pole at P, focus F and centre of curvature C. Draw ray diagram to show the formation of image of an object OA.
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उत्तर
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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
Write the mirror formula. Give the meaning of each symbol which occurs in it.
- A small object is placed 150 mm away from a diverging lens of focal length 100 mm.
- Copy the figure below and draw rays to show how an image is formed by the lens.
- Calculate the distance of the image from the lens by using the lens formula.
- Copy the figure below and draw rays to show how an image is formed by the lens.
- 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).
State the two kinds of spherical mirror and distinguish them with the aid of proper diagrams.
Name the kind of mirror used to obtain:
A real and diminished image.
At what distance from a concave mirror of focal length 25 cm should an object be placed so that the size of image is equal to the size of the object.
Define the term principal focus in case of convex mirror. Draw a convex mirror and show its principal focus and focal length clearly.
Draw a ray diagram to show that a convex mirror has a wider field of view.
An object is placed in front of a concave mirror as shown in the following figure. By scale drawing, find the nature of the image. Given f = 10 cm, v = 30 cm.
What is “aperture”?
