NEET2014Physics-Gravitation
NEET 2014 Physics Black Holes MCQ Question
Type: MCQ-numerical-Hard-Class 11
A black hole is an object whose gravitational field is so strong that even light cannot escape from it. To what approximate radius would earth (mass = 5.98 × 10²⁴ kg) have to be compressed to be a black hole?
A
10⁻⁹ m
B
10⁻⁶ m
C
10⁻² m
D
100 m
Correct Answer
Option C
Detailed Explanation
The Schwarzschild radius Rₛ = 2GM/c². Substituting the values for Earth, Rₛ ≈ 8.87 mm, which is approximately 10⁻² m.
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