For a black hole, the radius must be less than or equal to the Schwarzschild radius. Radius depends on mass.
Class 11 Physics
Gravitation
CBSE Exam 2024-25
A Black hole is a body from whose surface nothing may evan escape. What is the condition for an uniform spherical body of amss M to be a black hole? What should be the radius of such a black hole if its mass is nine times the mass of the earth?
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