2. You are given a plane mirror, convex mirror, concave mirror, convex lens and a concave
lens. Give two methods by which you can form diminished images of an object and two
methods by which you can form enlarged images.
Answers
Q3
In the table below, column I lists various mirrors and lenses and column II their uses, qualities or properties.
column I Column II
I. Plane mirror A. Feels thinner in the middle.
II. Concave mirror B. Always forms virtual image.
III. Convex mirror C. Always forms virtual image of smaller size.
IV. Concave lens D. Is used by dentists to examine teeth.
V. Convex lens E. Can be used as reading glass.
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Answer:
Convex mirrors are used in passenger side mirrors on a car or automobiles and it is labelled as “objects in the mirror are closer than they appear” to warn the driver. Understand the difference between the convex and concave mirror as convex mirrors form a smaller image of any object but on the other hand concave mirrors form a magnified and inverted image of the object, this would form an image of a smaller area or place that would be hard to understand. So, don’t get confused between mirrors used in motor vehicles.
Explanation:
Convex mirrors always form the images that are virtual and smaller than the actual object. When the object is far away from the mirror the image is upright and located at the focal point of that mirror.