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| Q. |
The element used for making solar cells is - |
| A. | Magnesium |
| B. | Sodium |
| C. | Calcium |
| D. | Silicon |
| Answer» D. Silicon | |
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Explanation: Materials presently used for photovoltaic solar cells include mono-crystalline silicon, polycrystaijhne silicon, amorphous silicon, cadmium telluride, and copper indium selenideisulfide. |
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