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What is meant by dispersion of light?

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Define refraction?

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What are the different ways to transfer heat?

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.Why the process of conduction is very slow in liquids and gases?

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What can happen to the light passing through prism?

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When total internal reflection takes place?

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How can we calculate the refractive index of water?

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What is meant by convection current?

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What is prism?

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Why the transfer of heat energy from fast moving molecules to neighbouring molecules is slow?

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Define dispersion of light?

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Periscope consists of which components?

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Define chemical fertilizers. How it is prepared?

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How do we see a mirage?

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What happens, when light travels from glass into air at an angle?

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Where optical fibres are used?

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Write the chemical change in carbon?

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What are optical fibres?

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Describe the formation of rainbow?

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Which surfaces are the bad emitters of radiation?

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