Which Statement About Black Holes Is True

question 89

Multiple Choice

Which statement about black holes is true?

• A) They form from 1.4 solar mass stars.
• B) They form an event horizon at twice the Schwartzschild radius.
• C) Their escape velocity is greater than the speed of light.
• D) Their event horizon is a physical surface boundary.
• E) Their main- sequence mass was 5- 10 solar masses.

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