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प्रश्न
What type of image is formed:
on a cinema screen?
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उत्तर
The image formed on a cinema screen is real because it is formed due to an actual meeting of the light rays.
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संबंधित प्रश्न
Define Radius of curvature of the spherical mirror
What happens when a ray of light falls normally (or perpendiculary) on the surface of a plane mirror?
A ray of light is incident normally on a plane mirror. What will be the
angle of reflection?
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
At which point of the spherical mirror the carbon paper is placed?
When a spherical mirror is held towards the sun and its sharp image is formed on a piece of a carbon paper for some time, a hole is burnt in the carbon paper.
What name is given to the distance between spherical mirror and carbon paper?
How is the focal length of a spherical mirror related to its radius
Draw suitable diagrams to illustrate the action of (i) concave mirror and (ii) convex mirror on a beam of light incident parallel to the principal axis.
The erect image formed by a concave mirror is of size double the size of object. How are u and v related?
A straight stick partly dipped in water obliquely appears to be bent at the surface of the water.
Define the following term in relation to concave mirror.
Aperture
In the following figure shows a concave mirror with its pole (P), focus (F) and centre of curvature (C). Draw a ray diagram to show the formation of the image of an object AB by the concave mirror.
Define the term Centre of curvature.
Define the term Focus of a concave mirror.
An object is placed at a distance of 0.25 m
in front of a plane mirror. The distance between the object and image will be ______.
The radius of curvature of a spherical mirror is 18 cm. What is the focal length of this 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 ______.
