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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
Complete the following sentence:
All the distances are measured from the .......... of a spherical mirror.
A small object is placed 150 mm away from a diverging lens of focal length 100 mm.
(i) Copy the figure below and draw rays to show how an image is formed by the lens.
Figure
(ii) Calculate the distance of the image from the lens by using the lens formula.
Name the kind of mirror used to obtain:
A virtual and diminished image
Draw a ray diagram to show the formation of image of an object kept in front of a convex mirror. State three characteristics of the image.
The radius of curvature of a convex mirror is 40 cm. Find its focal length.
An object 5 cm high forms a virtual image of 1.25 cm high, when placed in front of a convex mirror at a distance of 24 cm. Calculate:
- the position of the image
- the focal length of the convex mirror.
The radius of curvature of a spherical mirror is 18 cm. What is the focal length of this mirror?
