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प्रश्न
Draw a ray diagram to show that the depth of a vessel containing water when seen from above, appears to be less than its real depth.
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उत्तर
When there is no water in the vessel (a) when water is added in the vessel coin appear to be at B than actually, the coin is at A. Hence, the coin appears to be raised up in water.
i.e. its height appears to be less than actual.
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संबंधित प्रश्न
A ray of light falls normally on a glass slab. What is the angle of incidence?
State the two laws of reflection of light.
Name the mirror which always forms an erect and virtual image. What is the size of the image as compared to that of the object?
Give two characteristics of the virtual image formed by a convex lens.
State the changes in the position, size and nature of the image when the object is brought from infinity up to the convex lens. Illustrate your answer by drawing ray diagrams.
State the changes in the position, size and nature of the image when the object is brought from infinity up to a concave lens. Illustrate your answer by drawing ray diagrams.
We can create enlarged, virtual images with ______.
Assertion (A): Virtual objects can’t be seen by the human eye.
Reason (R): Virtual image is formed by converging rays.
A real image is inverted and can be caught on the screen.
Distinguish between real & virtual images.
