The sun delivers 104 Wm−2 of elect

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Target Exam

CUET

Subject

Physics

Chapter

Electromagnetic Waves

Question:

The sun delivers 10⁴ Wm⁻² of electromagnetic flux to the earth’s surface. The total power that in incident on a roof of dimensions 10m square will be

Options:

10⁴ W

10⁵ W

10⁶ W

10⁷ W

Correct Answer:

10⁶ W

Explanation:

Total power=solar constant × area

= 10⁴ × (10 × 10) = 10⁶ W