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What is regular reflection?

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What are heavenly bodies?

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What are the types of reflecting surface?

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Name the first two men who stepped on the moon?

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Why sound energy needs a medium?

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Define meteoroid?

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What do you know about Ceres and Vesta?

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How we see light earlier than sound?

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Differentiate between transparent and translucent materials?

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Contrasts the images formed by pin-hole camera and plane mirror?

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Why polar satellite was sent into space?

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Give the laws of reflection?

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What is reflected ray and incident ray?

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Write about first artificial satellite?

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Write a short note on Explorer-1?

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Write a short note on Explorer-1?

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What is reflecting telescope?

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How does a sound produce?

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What is the function of the outer part of the ear?

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Is a shiny metal plate also said to be a mirror?

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