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Question

What is the distance (in minutes) between the Sun and the Earth, in terms of light years?

This question was previously asked in
SSC CHSL 2025 Tier 1 Question Paper (21-Nov-2025) (Shift 1)
The correct answer is

8.311

Time taken by light = distance ÷ speed of light
Average Sun-Earth distance = about 1.496 × 108 km
Speed of light = about 2.998 × 105 km/s

Time = 1.496 × 108 ÷ 2.998 × 105 s
= about 499 s
= 499 ÷ 60 min
= about 8.3 min

So the Sun is roughly 8.3 light-minutes from the Earth; the sunlight we see left the Sun about 8 minutes 20 seconds earlier. The nearest given value is 8.311.

Check: 8.311 × 60 ≈ 499 s, and 499 s × 2.998 × 105 km/s ≈ 1.5 × 108 km, which is 1 astronomical unit.

Hence, 8.311.

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