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Physical quantities and units

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Question 4
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Which of the following lists of power values is in order of decreasing magnitude?

A

1.5×109 nW1.5 \times 10^9\text{ nW}1.5×109 nW, 1.5×104 mW1.5 \times 10^4\text{ mW}1.5×104 mW, 1.5×108 μW1.5 \times 10^8\ \mu\text{W}1.5×108 μW, 1.5×10−3 MW1.5 \times 10^{-3}\text{ MW}1.5×10−3 MW

B

1.5×10−3 MW1.5 \times 10^{-3}\text{ MW}1.5×10−3 MW, 1.5×108 μW1.5 \times 10^8\ \mu\text{W}1.5×108 μW, 1.5×104 mW1.5 \times 10^4\text{ mW}1.5×104 mW, 1.5×109 nW1.5 \times 10^9\text{ nW}1.5×109 nW

C

1.5×10−3 MW1.5 \times 10^{-3}\text{ MW}1.5×10−3 MW, 1.5×104 mW1.5 \times 10^4\text{ mW}1.5×104 mW, 1.5×108 μW1.5 \times 10^8\ \mu\text{W}1.5×108 μW, 1.5×109 nW1.5 \times 10^9\text{ nW}1.5×109 nW

D

1.5×109 nW1.5 \times 10^9\text{ nW}1.5×109 nW, 1.5×108 μW1.5 \times 10^8\ \mu\text{W}1.5×108 μW, 1.5×104 mW1.5 \times 10^4\text{ mW}1.5×104 mW, 1.5×10−3 MW1.5 \times 10^{-3}\text{ MW}1.5×10−3 MW

Markscheme

Physical quantities and units Questions

  1. A Level
  2. /Physics
  3. /Physical quantities and units

29 exam-style questions on OCR A A Level Physics Physical quantities and units, covering Physical quantities and S.I. units. Each one has a worked solution and a mark scheme showing where the marks go.

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