What is the average distance (approximate) between the Sun and the Earth?

Correct Option

The average distance between the Sun and the Earth is approximately 149.6 million kilometres. This fundamental astronomical distance is formally defined as one Astronomical Unit (AU). For general understanding and calculations, this value is commonly rounded to 150 million kilometres.

Option (d) is presented as 150 × 10⁶ km. In the context of the question seeking the approximate average distance, this option is identified as the correct answer, with the numerical component '150' aligning with the rounded average distance.

Incorrect Options

The actual average distance between the Sun and Earth is approximately 150 million kilometres (1.5 × 10⁸ km).

• Option (a) 70 × 10⁵ km: This value represents 70 billion kilometres (7.0 × 10¹⁰ km), which is significantly greater than the actual average distance.
• Option (b) 100 × 10⁵ km: This value represents 100 billion kilometres (1.0 × 10¹¹ km), also substantially larger than the actual average distance.
• Option (c) 110 × 10⁶ km: This value represents 1.1 trillion kilometres (1.1 × 10¹² km), which is vastly larger than the actual average distance.