Five energies are listed.5 KJ5mJ 5MJ 5nJStarting with the smallest first, what is the order of increasing magnitude of these energies?
Correct answer: A. 5nJ -> 5 mJ -> 5 kJ -> 5 MJ
- A. 5nJ -> 5 mJ -> 5 kJ -> 5 MJ
- B. 5 nJ -> 5 kJ -> 5 MJ -> 5 mJ
- C. 5 kJ -> 5 mJ -> 5 MJ -> 5 nJ
- D. 5 mJ -> 5 nJ -> 5 kJ -> 5 MJ
Explanation
In order to solve this you must know the value and symbol of the number prefix. (Refer to the table below)5 kJ = 5 x10^3J5 mJ = 5 x10^-3 J5 MJ = 5 x10^6 J5 nJ = 5 x10^-9 JThe order of increasing magnitude will be 5 x10^-9 J < 5 x10^-3 J < 5 x10^3J < 5 x 10^6 J5 nJ < 5 mJ < 5 kJ < 5 MJ
This question appeared on the HEC Phase II 2017 paper, which you can sit online with every answer explained.
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