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प्रश्न
If a driver has one convex and one plane rear-view mirror, how would the images in each mirror appear different?
उत्तर
| Image formed in a plane mirror | Image formed in a convex mirror |
| 1. Image is of the same size as the object. | 1. Image is smaller than the object. |
| 2. The distance of the image from the mirror is equal to the distance of the object from the mirror. | 2. Distance of the image from the mirror is not equal to the distance of the object from the mirror. |
| 3. It has a small field of view. | 3.Iit has a large field of view. |
संबंधित प्रश्न
Analyse the following observation table showing variation of image distance (v) with object distance (u) in case of a convex lens and answer the questions that follow, without doing any calculations:
| S. No. | Object distance u(cm) | Image distance v(cm) |
| 1 | −90 | +18 |
| 2 | −60 | +20 |
| 3 | −30 | +30 |
| 4 | −20 | +60 |
| 5 | −18 | +90 |
| 6 | −10 | +100 |
(a) What is the focal length of the convex lens? Give reason in support of your answer.
(b) Write the serial number of that observation which is not correct. How did you arrive at this conclusion?
(c) Take an appropriate scale to draw ray diagram for the observation at S. No. 4 and find the approximate value of magnification.
State the relation between object distance, image distance and focal length of a spherical mirror (concave mirror or convex mirror).
Draw a labelled ray diagram to show the formation of image of an object by a convex mirror. Mark clearly the pole, focus and centre of curvature on the diagram.
State three characteristics of the image formed by a convex mirror.
Name two factors on which the focal length of a lens depends.
Write true or false
The focal length of a convex mirror is equal to its radius of curvature.
List four properties of the image formed by a convex mirror when object is placed between focus and pole of the mirror.
The mirror used as rear-view mirror in vehicles ______.
The most common example of a convex mirror is the make – up mirror.
A convex rearview mirror is preferred over a plane mirror in a car. Why?
