CUET Preparation Today
The sun radiates electromagnetic energy at the rate of 3.9 × 1026 W. Its radius is 6.96 × 108 m. The intensity of sun light at the solar surface will be: |
1.4 × 104 2.8 × 105 4.2 × 106 5.6 × 107 |
5.6 × 107 |
Isurface = $\frac{P}{A}=\frac{3.9 \times 10^{26}}{4 \times 3.14 \times(6.96)^2 \times 10^{16}}$ = 5.6 × 107 W/m2 |
