Question

For the given figure solid angle, $d\Omega$ is equal to

• A. $r^{2}dA$ steradian
• B. $dA/r^2$ steradian
• C. $\frac{r^2}{dA}$ steradian
• D. $dA/r$ steradian

Answer 1

Answer: (B)

Correct answer is (b) $dA/r^2$ steradian