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प्रश्न
An object is placed in front of a lens between its optical centre and the focus and forms a virtual, erect, and diminished image. Draw a ray diagram to show the formation of the image with the above-stated characteristics.
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उत्तर
संबंधित प्रश्न
The speed of light in air is 3 × 108 m s-1. Calculate the speed of light in glass. The refractive index of glass is 1.5
A lens forms an erect, magnified, and virtual image of an object. Where is the object placed in relation to the lens?
What is a magnifying glass?
The magnification by a lens is -3. Name the lens and state how are u and v related?
The magnification by a lens is +0.5. Name the lens and state how are u and v related?
What are conjugate foci?
Name the lens for which magnification is always less than 1.
Copy and complete the following ray diagram.
An object AB is placed between 2F1 and F1 on the principal axis of a convex lens as shown in the diagram. Copy the diagram and using three rays starting from point A, obtain the image of the object formed by the lens.
What is a magnifying glass (or a simple microscope)? Draw a ray diagram to show how a convex lens may be used as a magnifying glass. Where should the object be placed? State three characteristics of the image formed.
