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प्रश्न
Draw a ray diagram to show the formation of image of an object placed between the pole and focus of a concave mirror. State the position, size and nature of the image.
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उत्तर
OBJECT LIES BETWEEN FOCUS AND POLE :
A virtual erect and bigger image is formed behind the mirror
Image formed A’B’ is on the other side of the mirror on producing ← position
Enlarged (magnified) ← size
Virtual and erect ← nature
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संबंधित प्रश्न
A student obtained a sharp image of a candle flame placed at the distant end of the laboratory table on a screen using a concave mirror to determine its focal length. The teacher suggested him to focus a distant building, about 1 km away from the laboratory, for getting more correct value of the focal length. In order to focus the distant building on the same screen, the student should slightly move the
(a) mirror away from the screen
(b) screen away from the mirror
(c) screen towards the mirror
(d) screen towards the building
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.
If the focal length of a convex mirror is 25 cm, what is its radius of curvature?
Make labelled ray diagrams to illustrate the formation of:
a virtual image by a converging mirror.
Mark clearly the pole, focus, centre of curvature and position of object in each case.
Draw ray-diagrams to show the formation of images when the object is places in front of a concave mirror (converging mirror):
(i) between its pole and focus
(ii) between its centre of curvature and focus
To find the focal length of a concave mirror Rahul focuses a distant object with this mirror. The chosen object should be
(1) a tree
(2) a building
(3) a window
(4) the sun
Under which of the following conditions a concave mirror can form an image larger than the actual object?
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 ______.
In the headlights of motor vehicles, ______ mirrors are used as reflectors.
The focal length of a concave mirror is 5cm. Its radius of curvature is ______.
