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प्रश्न
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उत्तर
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संबंधित प्रश्न
Define the following term in the context of spherical mirrors:- Pole
Define the following term in the context of spherical mirrors:- Principal focus
Name the two types of spherical mirrors. What type of mirror is represented by the:
- back side of a shining steel spoon?
- front side of a shining steel spoon?
What is a spherical mirror?
Explain the following terms :
Pole, Centre of curvature, Radius of curvature, Principal axis. Show them on separate diagrams for each of the concave and convex mirrors.
AB and CD, two spherical mirrors, from parts of a hollow spherical ball with its centre at O as shown in the diagram. If arc AB = `1/2` arc CD, what is the ratio of their focal lengths? State which of the two mirrors will always form virtual image of an object placed in front of it and why.
State the kind of mirror used
(a) By a dentist,
(b) As a search-light reflector.
The sun is seen before the sunrise and after the sunset.
Size of image of an object by a mirror having a focal length of 20 cm is observed to be reduced to 1/3rd of its size. At what distance the object has been placed from the mirror? What is the nature of the image and the mirror?
