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प्रश्न
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उत्तर
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संबंधित प्रश्न
Name the spherical mirror which has:
(a) virtual principal focus.
(b) real principal focus.
Complete the following sentence:
All the distances are measured from the .......... of a spherical mirror.
A 2.0 cm tall object is placed 40 cm from a diverging lens of focal length 15 cm. Find the position and size of the image.
What is a spherical mirror?
State the two kinds of spherical mirror and distinguish them with the aid of proper diagrams.
Define the term principal focus in case of convex mirror. Draw a convex mirror and show its principal focus and focal length clearly.
What is the difference between virtual images of an object formed by a concave mirror and a convex mirror?
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 ______.
