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Earn 100

Dispersion is the term used to describe _____.

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Important Questions on Optics

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General Science for Competitive Exams>Chapter 5 - Optics>EXERCISE>Q 15

Consider telecommunication through optical fibres. Which of the following statements is not true?

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General Science for Competitive Exams>Chapter 5 - Optics>EXERCISE>Q 16
An optician while testing the eyes finds the vision of a patient to be 612. By using this he means that _____.
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General Science for Competitive Exams>Chapter 5 - Optics>EXERCISE>Q 17
A mirage occurs because _____.
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General Science for Competitive Exams>Chapter 5 - Optics>EXERCISE>Q 18
A well cut diamond appears bright because _____.
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General Science for Competitive Exams>Chapter 5 - Optics>EXERCISE>Q 19
Twinkling of stars is on account of _____.
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General Science for Competitive Exams>Chapter 5 - Optics>EXERCISE>Q 20
A coin in a beaker filled with water appears raised. This phenomenon occurs because of the property of _____.
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General Science for Competitive Exams>Chapter 5 - Optics>EXERCISE>Q 21
A spherical air bubble is embedded in a piece of glass. For a ray of light passing through the bubble, it behaves like a _____.
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General Science for Competitive Exams>Chapter 5 - Optics>EXERCISE>Q 22
'The stars seem to be higher on the sky than they actually are'. This can be explained by _____.