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प्रश्न
State the changes in the position, size and nature of the image when the object is brought from infinity up to a concave lens. Illustrate your answer by drawing ray diagrams.
उत्तर
(i) When object (AB) is situated at infinity then parallel rays from object appears to fall on concave lens. Due to which image forms at focus. This image is highly diminished in size and virtual and upright
(ii) When object (AB) is situated at any point between infinity and optical centre of the lens, then image forms between focus and optical centre. This image is diminished in size and virtual and upright.
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संबंधित प्रश्न
Rays of light incident parallel to the principal axis pass through the focus after reflection from a concave mirror.
The angle of incidence for a ray of light passing through the centre of curvature of a spherical mirror is ...........
Define the following terms :
Incident ray, Refracted ray, Angle of incidence, Angle of refraction.
You can see your image in polished floors, but not in wooden table because ______.
Say TRUE or FALSE
The image formed in a pinhole camera is always the same size as the object
What are the characteristics of an image formed in a plane mirror?
Match the following:
| 1. | Real image | a. | Diffuse reflection |
| 2. | Virtual image | b. | An optical device which produces reflection |
| 3. | Mirror | c. | Cannot be taken on screen |
| 4. | A type of light scattering | d. | Can be taken on screen |
Describe the nature of images formed by plane mirrors.
A concave lens produces only ______ image.
