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The radiation pressure exerted by a 450 W light source on a perfectly reflecting surface placed at 2 m away from it, is

1. 1.5 × 10 – 8 Pascals
2. 0
3. 3 × 10 – 8 Pascals
4. 6 × 10 – 8 Pascals

Correct answer: 6 × 10 – 8 Pascals

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