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NAVNEET PUBLICATION-LENSES-EXERCISE
- Answer the following questions : Name two devices whose working is ba...
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- Answer the following questions : Name any two applications based on p...
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- Answer the following questions : How is the phenomenon of persistance...
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- Answer the following questions : Name the two types of light sensitiv...
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- Answer the following questions : When do you say that a person iscolo...
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- Answer the following questions : Explain the perception of colour in ...
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- Answer the following questions : Explain in short perception of colou...
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- Answer the following questions : Write a note on perception of colour...
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- What is colour blindness?
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- Answer the following questions : What are some persons colour- blind?...
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- Answer the following questions : What are the difficulties faced by a...
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- Give scientific reasons : A convex lens is known as a converging len...
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- Give scientific reasons : A concave lens is known as a diverging len...
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- Give scientific reasons: Simple microscope is used for watch repair
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- Give scientific reasons : Watch repairers use a magnifying glass.
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- Give scientific reasons : In old age, a bifocal lens is necessary fo...
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- Give scientific reasons : A person suffering from myopia (nearsighte...
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- Give scientific reasons : A person suffering from hypermetropia (far...
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- Give scientific reasons : You cannot enjoy watching a movie from a v...
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- Give scientific reasons : We cannot clearly see an object kept at a ...
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