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संबंधित प्रश्न
Define the following term in the context of spherical mirrors:- Centre of curvature
A 50 cm tall object is at a very large distance from a diverging lens. A virtual, erect and diminished image of the object is formed at a distance of 20 cm in front of the lens. How much is the focal length of the lens?
A real and enlarged image can be obtained by using a
Choose the correct alternative and rewrite the following:
Mirror used by a dental surgeon is ..........................
Define the following term in relation to concave mirror.
Principal axis
If the focal length of a spherical mirror is 10 cm, what is the value of its radius of curvature?
Numerical problem.
The radius of curvature of a spherical mirror is 25 cm. Find its focal length.
In normal adjustment, for a refracting telescope, the distance between objective and eye piece is 30 cm. The focal length of the objective, when the angular magnification of the telescope is 2, will be ______.
Define the following terms in the context of a diverging mirror:
- Principal focus
- Focal length
Draw a labelled ray diagram to illustrate your answer.
