Question

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? [2014]
(a) 10⁻⁹ m (b) 10⁻⁶ m
(c) 10⁻² m (d) 100 m

Answer 1

$10 { }^{ - 2} m$