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प्रश्न
An image which can be obtained on a screen is called a ______ image.
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उत्तर
An image which can be obtained on a screen is called a real image.
Explanation:
A real image is formed by converging light rays and can be projected onto a screen, making it visible at the point where the rays meet.
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संबंधित प्रश्न
Match the items given in Column I with one or more items of Column II.
| Column I | Column II | ||
| (a) | A plane mirror | (i) | Used as a magnifying glass. |
| (b) | A convex mirror | (ii) | Can form image of objects spread over a large area. |
| (c) | A convex lens | (iii) | Used by dentists to see enlarged image of teeth. |
| (d) | A concave mirror | (iv) | The image is always inverted and magnified. |
| (e) | A concave lens | (v) | The image is erect and of the same size as the object. |
| (vi) | The image is erect and smaller in size than the object. |
What type of image is formed:
on a cinema screen?
Define the terms focus and focal length of a concave mirror. Draw diagram to illustrate your answer.
Name the mirrors shown in Figure (a) and (b).
Discuss the position and nature of image formed by a concave mirror when an object is moved from infinity towards the pole of mirror.
An object 5 cm high forms a virtual image of 1.25 cm high, when placed in front of a convex mirror at a distance of 24 cm. Calculate:
- the position of the image
- the focal length of the convex mirror.
Find the height of the image of a body of height 1.5m in a mirror with a magnification of 1.5.
The boxes in figure (a, b, c) represent mirrors; insert a mirror which will reflect the incident ray as shown in the diagram.
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.
