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Acids, Bases And Salts

Question
CBSEENSC10012901
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Name the phenomenon due to which an ink dot marking on a piece of paper appears to be raised when viewed under a glass slab.

Solution
Ink dot marked on a piece of paper appears to be raised when viewed under a glass slab because of refraction of light as it passes from glass to air.

Some More Questions From Acids, Bases and Salts Chapter

Briefly discuss the various theories about the nature of light.

What is the wavelength range of visible light? What is the importance of this wavelength range?

Define a ray of light and a beam light. What are the different types of beams of light?

What is an optical medium? How can we classify different media on the basis of their behaviour towards light?

What do you mean by reflection, refraction and absorption of light?

Which type of phenomenon (reflection or refraction) occurs when light falls on (i) a highly polished surface like a mirror and (ii) a transparent medium like glass or water?

What is meant by the optical image of an object?

What are real and virtual images? Can these images be obtained on a screen? Give reasons in support of your answer.

Give three points of differences between real and virtual images.

What is a mirror? Mention the different types of mirrors commonly used.

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