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Frage 1
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A Black Hole has mass MBH = 15 MSolar. What is its Schwarzschild radius?
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50.5 km
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44.24 km
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76 km
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100 km
Frage 2
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A Black Hole has mass MBH = 1800MSolar. What is its Schwarzschild radius?
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150.5 km
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444.24 km
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5309.32 km
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8769.60 km
Frage 3
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If the Schwarzschild radius of a Black Hole is 10 km, what is its mass?
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15 Msolar
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6.8 Msolar
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35 Msolar
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48 Msolar
Frage 4
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Why black holes are black?
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Because they do not have any energy
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Because nothing escapes
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Because radiation does not escape
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Because light does not escape
Frage 5
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What is at the center of a black hole?
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Another black hole
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A little galaxy
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The singularity point
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An X-ray source
Frage 6
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What is a supermassive black hole?
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Black hole with mass similar to the sun
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Black hole with mass similar to Jupiter
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Black hole with mass similar to 3Msolar
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Black hole with mass (thousand - billion) Msolar
Frage 7
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How did the Black Holes were predicted?
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By observation
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With radio telescopes
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With optical telescopes
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Mathematically using Einstein’s general relativity theory
Frage 8
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Hawking radiation is black body radiation due to
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Electromagnetic effects
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Quantum effects
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Gravity effects
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Mechanical effects
Frage 9
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Where is the Hawking radiation emitted?
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Near the singularity
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Near the horizon
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Near the Schwarzschild radius
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From particles orbiting the black hole
Frage 10
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Two Black Holes have the following masses M1 = 100 Msolar and M2 = 40 Msolar . Show that Schwarzschild radius of the first black hole satisfies one of the relations given below. (Do not panic this is a really easy question!!. Hint: All you need is the relation that gives the Schwarzschild radius of a black hole. Look at the lecture slides.)
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