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Question
Draw a labelled ray diagram to show how a ray of light is refracted when it passes:
from air into an optically denser medium.
Solution
Refraction of light ray when it passes from air to an optically denser medium:
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RELATED QUESTIONS
A student places a candle flame at a distance of about 60 cm from a convex lens of focal length 10 cm and focuses the image of the flame on a screen. After that he gradually moves the flame towards the lens and each time focuses the image on the screen.
(a) In which direction-toward or away from the lens, does he move the screen to focus the image?
(b) How does the size of the image change?
(c) How does the intensity of the image change as the flame moves towards the lens?
(d) Approximately for what distance between the flame and the lens, the image formed on the screen is inverted and of the same size?
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Copy the diagram and by using three standard rays starting from point A, obtain an image of the object AB.
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hypermetropia
Study the diagram given below.
- Name the lens LL’.
- What are the points O and O’ called?
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- Name a device in which this action of lens is used.
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ii. Label the figure correctly.
iii. Write the working of this microscope.
iv. Where does this microscope used?
v. Suggest a way to increase the efficiency of this microscope.
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