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| Q. |
The wire of flash bulbs is made up of – |
| A. | Mg |
| B. | Ba |
| C. | Cu |
| D. | Ag |
| Answer» A. Mg | |
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Explanation: The wire of flash bulbs is made up of magnesium. Magnesium filaments are contained in bulbs filled with oxygen gas, and electrically ignited by a contact in the camera shutter. |
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