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प्रश्न
Show with the help of a ray diagram, the path of the ray when incident normally on the first surface of the glass block, through the block and the liquid.
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उत्तर
We are assuming that the glass block is bounded by parallel plane refracting surfaces.
संबंधित प्रश्न
The following diagram shows an object AB and a converging lens L with foci F1 and F2 State three characteristics of the image in relation to the object.
A lens forms an erect, magnified and virtual image of an object. Draw a ray diagram to show the formation of image.
A lens forms an erect, magnified, and virtual image of an object. Name the device which uses this principle.
What is a magnifying glass?
Draw a neat labelled ray diagram to show the formation of an image by a magnifying glass. State three characteristics of the image.
An illuminated object lies at a distance 1.0 m from a screen. A convex lens is used to form the image of the object on a screen placed at a distance of 75 cm from the lens. Find:
- the focal length of the lens, and
- the magnification.
What is a simple microscope or a magnifying glass? Draw a ray diagram to show its function.
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.
(i) Draw a ray diagram to show how the lens can be used as a ‘magnifying glass’? State the nature of the lens.
(ii) In what respect does the image in (i) above different from the image formed by a concave lens?
State two uses of magnifying glass.
