1. What is a ‘solar cell’?

CBSE Class 10 CBSE Class 10 Science
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1
  1. What is a ‘solar cell?
  2. Why is biogas considered an ideal fuel for domestic use?
  3. Name a device in which controlled chain reaction is used.
2

  1. A solar cell is a device which converts solar energy into electricity. It is a sandwich of
    a silicon-boron layer and a silicon-arsenic layer.

  2. Biogas is an ideal fuel for domestic use because it is a cheap and clean fuel, which does not leave behind any residue.

  3. A nuclear power plant is a device in which controlled chain reaction is used.