The total solid angle around a point is

Options

  • A. 2π steradian
  • B. 3π steradian
  • C. 4π steradian
  • D. 6π steradian
  • E. None of the above

Correct Answer (Detailed Explanation is Below)

C. 4π steradian

Detailed Explanation

A complete sphere subtends a total solid angle of 4π steradian at its centre.