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प्रश्न
An object is placed at a distance of 12 cm in front of a concave mirror of radius of curvature 30 cm. List four characteristics of the image formed by the mirror.
उत्तर
Here, radius of curvature (R) of concave mirror is given 30 cm.
Therefore, focal length of the mirror,
`f =R/2= 30/2 = 15` cm
Also, it is given that object is placed at a distance of 12 cm in front of a concave mirror . Hence, it is apparent that object is placed between the focus and pole of the mirror.
Therefore, four properties of the image formed by the given concave mirror of the object placed between focus and pole of the mirror are:
(i) Image is always erect
(ii) Big in size
(iii) Virtual
(iv) Always forms behind the mirror.
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संबंधित प्रश्न
"A concave mirror of focal length 15 cm can form a magnified, erect as well as inverted image of an object placed in front of it." Justify this statement stating the position of the object with respect to the pole of the mirror in both the cases for obtaining the images.
To construct ray diagrams, two rays of light are generally so chosen that it is easy to determine their directions after reflection from a mirror. Choose two such rays and state the path/direction of these rays after reflection from a concave mirror. Use these two rays to find the position and nature of the image of an object placed at a distance of 8 cm from a concave mirror of focal length 12 cm.
The image formed by a concave mirror is observed to be virtual, erect and larger than the object. Where should the position of the object be relative to the mirror? Draw ray diagram to justify your answer.
For what position of an object, a real and diminished image is formed by a concave mirror?
With the help of a labelled ray diagram, describe how a converging mirror can be used to give an enlarged upright image of an object.
Why does a beam of light when it enters glass at an angle? Why does it not bend if it inters the glass at right angles?
Complete the following diagrams in figure by drawing the reflected rays for the incident rays 1 and 2 if F is the focus and C is the centre of curvature.
The image formed by concave mirror is real, inverted and of the same size as that of the object. The position of object should be ______.
______ mirrors make things look larger when objects are placed close to them.
In torches, searchlights, and headlights of vehicles, the bulb is placed ______ of the concave mirror.
