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Physics 9th Class English Medium Unit 1 Online Test
| Sr. # | Questions | Answers Choice |
|---|---|---|
| 1 | The instrument that is most suitable for measuring the thickness of a few sheets on cardboard is a. |
<p>Metre rule</p> <p>Measuring tape</p> <p>Micrometer screw guage</p> |
| 2 | The instrument best measures the internal diameter of a pipe is. | Screw gauge Metre rule Vernier caliper Measuring tape |
| 3 | Least count of scew gauge is 0.01 mm. If main scale reading of screw guage is zero and third line of its circular scale conscides with datum line then the measurement on the screw guage is. | 0.03mm 3 mm 0.3mm 0.1 mm |
| 4 | Micro meter can be used to measure. | Current Length Force Mass |
| 5 | Ratio of milimeter to micrometer is | 1000 m 0.001 meter 1000 0.001 |
| 6 | Which of following prefeix represents largest value. | Pico Peta Mega Kilo |
| 7 | The numbers having one significance digit is. | 6.0 1.1 6 x 10<sup>2</sup> 7.1 |
| 8 | Which of the following numbers show 4 significant digits. | 9000.8 4 0.001248 5174.00 |
| 9 | In a vernier Calipers ten smallest divisions of the Vernier scale are equal to nine smallest divisions of the main scale. If the smallest divisions of the main scale is half milimeter, the Vernier constant is equal to. | 0.05 mm 0.5 mm 0.1 mm 0.001 mm |
| 10 | The number of significant figuresin 0.00650 s are | 2 3 5 6 |
| 11 | 0.2 mm in units of meters is. | 2 x 10<sup>4</sup> m 0.0002 m 0.002 m None of these |
| 12 | Which of the following is a base unit. | Mole Pascal Coulomb meter per second |
