TS EAMCET · Physics · Dual Nature of Matter
Electromagnetic radiation of intensity \(0.6 \mathrm{Wm}^{-2}\) is falling on a black surface. The radiation pressure on the surface is
- A \(2 \times 10^{-9} \mathrm{Nm}^{-2}\)
- B \(3 \times 10^{-9} \mathrm{Nm}^{-2}\)
- C \(4 \times 10^{-9} \mathrm{Nm}^{-2}\)
- D \(6 \times 10^{-9} \mathrm{Nm}^{-2}\)
Answer & Solution
Correct Answer
(A) \(2 \times 10^{-9} \mathrm{Nm}^{-2}\)
Step-by-step Solution
Detailed explanation
Radiation pressure on the surface is given by \(\begin{aligned} & P=\frac{I}{C}=\frac{0.6}{3 \times 10^8} \\ & =2 \times 10^{-9} \mathrm{~N} / \mathrm{m}^2\end{aligned}\)
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