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प्रश्न
Define the following term in the context of spherical mirrors:- Principal focus
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उत्तर
Principal focus of a spherical mirror:-
The focus (F) is the point on the principal axis of a spherical mirror where all the incident rays parallel to the principal axis meet or appear to diverge from after reflection.
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संबंधित प्रश्न
Name the two types of spherical mirrors. What type of mirror is represented by the:
front side of a shining steel spoon?
Name the spherical mirror which can produce a real and diminished image of an object.
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.
Select the correct option:
Which mirror is used in periscope?
Define the following term in relation to concave mirror.
Aperture
What is the relation between focal length and radius of curvature of a concave mirror?
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.
Define focal length.
For a spherical mirror, ______ is true.
