Physics 0625 · IGCSE · The Earth and the Solar System

The Earth and the Solar System — practice question

The radius of Venus’s orbit around the Sun is $110 \times 10^{6}\ \text{km}$. The radius of Earth’s orbit around the Sun is $150 \times 10^{6}\ \text{km}$. The speed of light is $0.30 \times 10^{6}\ \text{km s}^{-1}$. When Venus and Earth are at their nearest separation, how much time does light need to travel from Venus to Earth?

  • A$130\ \text{s}$
  • B$370\ \text{s}$
  • C$500\ \text{s}$
  • D$870\ \text{s}$

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