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प्रश्न
Why can you not use a concave mirror as a rear-view mirror in vehicles?
उत्तर
We cannot use a concave mirror as a rear-view mirror in vehicles because it forms an inverted image of the object which is at a large distance from it. Also, a concave mirror has an extremely small field of view, i.e. it can form very few images of many objects at the same time.
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संबंधित प्रश्न
No matter how far you stand from a mirror, your image appears erect. The mirror is likely to be ______.
Which mirror always produces a virtual, erect and diminished image of an object?
What is the advantage of using a convex mirror as rear-view mirror in vehicles as compared to a plane mirror? Illustrate your answer with the help of labelled diagrams.
What happens to the image when the object is moved away from the mirror gradually?
Whatever be the position of the object, the image formed by a mirror is virtual, erect and smaller than the object. The mirror then must be:
(a) plane
(b) concave
(c) convex
(d) either concave or convex
An object is kept at a distance of 5 cm in front of a convex mirror of focal length 10 cm. Calculate the position and magnification of the image and state its nature.
The radius of curvature of a convex mirror used as a rear view mirror in a moving car is 12.0 m. A truck is coming from behind it at a distance of 3.54 m. Calculate (a)
- position and
- size of the image relative to the size of the truck.
- What will be the nature of the image?
An object is placed at a distance of 100 cm from each of the above lenses A and B. Calculate (i) image distance, and (ii) magnification, in each of the two cases.
The focal length of a convex mirror is equal to its radius of curvature.
A full length image of a distant tall building can definitely be seen by using ______.
