Introduction to Physics - Prefixes

This exercise consist of 6 objective questions.

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1.  Which of the following sets of prefixes are arranged in descending order?

1. mili, centi, micro
2. mega, micro, gega
3. kilo, mili, centi
4. kilo, mili, nano

2.  Complete the following unit conversion.

12.3 MHz = _________ Hz

1. 12,300,000
2. 1,230,000
3. 123,000
4. 1,230

3.  Which of the following unit conversions is not correct?

1. 230 Ms = 2.3 x 108 s
2. 360 ms = 3.6 x 10^-1 s
3. 0.0013s = 1.3 ms
4. 2.34 x 105 s = 23.4 ks

4.  Which of the following unit conversions is correct?

1. 2.5 m² = 250 cm²
2. 5.6 m³ = 560 cm³
3. 4500 cm² = 45 m²
4. 2.5 x 107 cm3 = 25 m³

5.  The dimension of a cuboids is 10cm, 20cm and 20cm. The total surface area of the cuboids is

1. 1600 m²
2. 16 m²
3. 1.6 m²
4. 0.16 m²

6.  Complete the following unit conversion:

12 ms^-1 = __________ kmh^-1

1. 43.2
2. 4.32
3. 0.012
4. 0.12