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प्रश्न
Out of convex mirror and concave mirror, whose focus is situated behind the mirror?
उत्तर
The focus of the convex mirror is situated behind the mirror, as the latter has a virtual focus.
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संबंधित प्रश्न
A student has obtained the image of a distant object with a concave mirror to determine its focal length. If he has selected a well-illuminated red building as object, which of the following correctly describes the features of the image formed?
(A) Virtual, inverted and diminished image in red shade
(B) Real, erect and diminished image in pink shade
(C) Real, inverted and diminished image in red shade
(D) Virtual, erect and enlarged image in red shade
Copy this figure in your answer book and show the direction of the light ray after reflection:
Draw the following diagram in your answer book and show the formation of image of the object AB with the help of suitable rays:
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.
Name the type of mirror used by dentists. How does it help?
The real image formed by a concave mirror is larger than the object when object is:
(a) at a distance equal to radius of curvature
(b) at a distance less than the focal length
(c) between focus and centre of curvature
(d) at a distance greater than radius of curvature
An object is placed at a distance of 10 cm from a concave mirror of focal length 20 cm.
Calculate the image distance.
In which equipment/s do you find ___________________
An object at a distance of 30 cm from a
concave mirror gets its image at the same point. The focal length of the mirror is ______.
The ENT doctor uses a ______.
