Advertisements
Advertisements
प्रश्न
An object is placed in front of a converging lens and in front of a diverging lens as in fig.
(a)Complete the ray diagram to obtain an image.
(b)Compare the nature of image formed by both the lenses in the above case.
उत्तर
(a)
(b) In both the cases the image formed is virtual, upright and on the same side of the lens but the image formed by a convex lens is magnified and that formed by a concave lens is diminished.
APPEARS IN
संबंधित प्रश्न
In the formation of spectrum of white light by a prism:
which colour is deviated least?
Which is refracted most by a prism : red light or violet light? Explain why?
The splitting of white light into its constituent colours is called .............
Out of air and glass, which is optically rarer? Give reason.
What conclusion do you draw about the nature of white light in part (b)?
If white light is used in same way what change is expected in the emergent beam?
Answer the following question:
Differentiate between a glass slab and a glass prism. What happens when a narrow beam of
(i) a monochromatic light, and
(ii) white light passes through
(a) glass slab and
(b) glass prism?
Write an Explanation.
Critical angle
The splitting of white light in to seven colors is called ______.
When sunlight passes through water droplets in the atmosphere it gets dispersed into its constituent colours forming a rainbow. A similar phenomenon is observed when white light passes through a prism.
Instead of sunlight, a green-coloured ray is passed through a glass prism. What will be the colour of the emergent ray?
