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What is real and virtual image? Why is real image not formed by concave lense? Explain the answer by ray diagram

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Differentiate between real image and virtual image?

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Which is the most important part of space station?

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Which group of metals are highly reactive?

asked Nov 22, 2018 in Chemistry by danish (1.0m points)

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Why spacecraft is designed?

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Demonstrate image formation using a lens by ray diagram?

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What do you know about "lungs of the world" ?

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How many types of cells are present in human body?

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State the function of each part of the cell to indicate how the cell supports life.

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Describe development of tools and technologies used in space exploration.

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Why semiconductor diodes are used to convert A.C into D.C?

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What do you know about Manned spacecraft?

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What is centre of curvature ?

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What is principal focus?

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How fission reaction produce electricity?

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What is lone pair? How many lone pairs of electrons are present on nitrogen in ammonia?

asked Nov 22, 2018 in Chemistry by danish (1.0m points)

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What are rockets?

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What is remote sensing?

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Which method is used to balance the unbalanced equations?

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Describe the causes of gas pressure in a container.

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