Show by drawing a ray-diagram that the image of an object formed by a concave lens is virtual, erect and diminished.
The image formed by a concave lens is always virtual erect and diminished because it is formed on the left side of the lens.
Let us take an object $AB$ beyond the focus $(F)$ as shown in the figure given below. The image $A'B'$ is formed on the left side and above the principal axis of the concave lens and therefore, it is virtual and erect (upright) in nature. Also, the height of image $A'B'$ is less than the height of object $AB$, hence the image is diminished in size.
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- When an object is kept at any distance in front of a concave lens, the image formed is always:(a) virtual, erect and magnified (b) virtual, inverted and diminished(c) virtual, erect and diminished (d) virtual, erect and same size as object
- What is the minimum number of rays required for locating the image formed by a concave mirror for an object? Draw a ray diagram to show the formation of a virtual image by a concave mirror.
- If the image formed by a lens is always diminished and erect, what is the nature of the lens?
- An image formed by a lens is erect. Such an image could be formed by a$(a)$. convex lens provided the image is smaller than object.$(b)$. concave lens provided the image is smaller than object.$(c)$. concave lens provided the image is larger than object.$(d)$. concave lens provided the image is of the same size.
- For what position of an object, a real and diminished image is formed by a concave mirror?
- For what position of an object a real, diminished image is formed by a convex lens?
- Which mirror always produces a virtual, erect and diminished image of an object?
- A ___________ lens will always give a virtual, erect, and diminished image, irrespective of the position of the object.
- The image of an object formed by a plane mirror is:(a) virtual (b) real (c) diminished (d) upside-down
- State where an object must be placed so that the image formed by a concave mirror is:(a) erect and virtual.(b) at infinity.(c) the same size as the object.
- If an object is placed at a distance of 8 cm from a concave mirror of focal length 10 cm, discuss the nature of the image formed by drawing the ray diagram.
- The image formed by the concave mirror is observed to be virtual, erect and larger than the object. Where should be the position of the object relative to the mirror? Draw ray diagram to justify answer.
- The image formed by a lens is always virtual, erect and smaller in size for an object kept at different positions in front of it. Identify the nature of the lens.
- What kind of lens can form:(a) an inverted magnified image?(b) an erect magnified image?(c) an inverted diminished image?(d) an erect diminished image?
- Name the mirror which can give:(a) an erect and enlarged image of an object.(b) an erect and diminished image of an object.
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