What is the pressure of hydrogen in a cylinder of volume $10 \text{ litre}$ if its total energy of translation is $7.5 \times 10^3 \text{ J}$?
- A$5 \times 10^5 \text{ Nm}^{-2}$
- B$10^6 \text{ Nm}^{-2}$
- C$0.5 \times 10^5 \text{ Nm}^{-2}$
- D$5 \times 10^6 \text{ Nm}^{-2}$
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