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प्रश्न
Name two devices used to measure the short time interval of an event.
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उत्तर
Two devices used to measure the time interval of an event are
- StopWatch
- Stop Clock
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| Group 'A' | Group 'B' | ||
| 1 | Velocity | a | litre |
| 2 | Area | b | kilogram |
| 3 | Volume | c | metre/second |
| 4 | Mass | d | kilogram/cubic metre |
| 5 | Density | e | square metre |
