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| Q. |
Which instrument is used to measure depth of ocean? |
| A. | Galvanometer |
| B. | Fluxmeter |
| C. | Endoscope |
| D. | Fathometer |
| Answer» D. Fathometer | |
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Explanation: Galvanometer - measures electric current, Fluxmeter - measures magnetic flux, Endoscope - used to examine internal parts of the body. |
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