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Unit 1: Physical Quantities and Measurements — Mcqs

9th Class Physics · Unit 1: Physical Quantities and Measurements

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Multiple Choice Questions (Exercise)

1.The instrument that is most suitable for measuring the thickness of a few sheets on cardboard is a:

2.One femtometre is equal to:

3.A light year is a unit of:

4.Which one is a non-physical quantity?

5.When using a measuring cylinder, one precaution to take is to:

6.Volume of water consumed by you per day is estimated in:

7.A displacement can is used to measure:

8.Two rods with lengths 12.321 cm and 10.3 cm are placed side by side, the difference is their lengths is:

9.Four students measure the diameter of a cylinder with Vernier Calipers. Which of the following readings is correct?

10.Which of the following measures are likely to represent the thickness of a sheet of this book?

11.In a Vernier Calipers ten smallest divisions of the Vernier scale are equal to nine smallest divisions of the main scale. If the smallest division of the main scale is half millimeter, the Vernier constant is equal to:

SLO based Additional MCQs

Units

1.Which one of the following unit is not a derived unit?

2.Amount of a substance in terms of numbers is measured in:

3.Which of the following is a base unit?

4.0.2 mm in units of meters is:

a 0.0002 m
b 2 × 10^4 m
c both (a) and (b)
d none

Significant Figures

5.The number of significant figures in 0.00650s are:

6.Which of the following numbers show 4 significant digits?

7.The numbers having one significant digit is:

Prefixes

8.Which of following prefix represents largest value?

9.Ratio of millimeter to micrometer is:

Screw Gauge

10.Micro meter can be used to measure:

11.Least count of screw gauge is 0.01 mm. If main scale reading of screw gauge is zero and third line of its circular scale coincides with datum line then the measurement on the screw gauge is:

Measuring Instruments

12.The instrument best measures the internal diameter of a pipe is:

Scientific Notation

13.9.483 x10^3 m is the standard form of