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प्रश्न
Explain the following term related to spherical lenses:- aperture
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उत्तर
Aperture:-
The diameter of sphere of part of which a lens is formed is called the aperture.
संबंधित प्रश्न
We can obtain a real, enlarged and inverted image by a concave mirror.
A ray of light is incident normally on a plane mirror. What will be the
angle of incidence?
How is a spherical mirror used to converge a beam of light at a point? Name the type of mirror used.
Name the kind of mirror used to obtain:
A virtual and diminished image
Write the spherical mirror's formula and explain the meaning of each symbol used in it.
What is meant by magnification? Write its expression. What is its sign for the (a) real (b) virtual, image?
Select the correct option:
A concave mirror is made by cutting a portion of a hollow glass sphere of radius 30 cm. The focal length of the concave mirror is:
What is the relationship between the focal length and radius of curvature?
What is the focal length (f) of a mirror?
