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Science and Technology-2014: Daily Answer Writing Challenge – 34

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13 October 2014

1) Discuss the differences between LED, Mercury vapour lamps and incandescent lamps. Which among them should be more widely used and why? (200 Words)

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2) Write a note on the science behind working of an LED lamp.

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3) Write short notes on:(100 Words)

a) Place Cells

b) Grid Cells

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