Practice Test |
Please solve the following questions. This is not a real exam, it will not be graded, and you do not need to submit your solutions to anyone. The questions are simply intended to help you practice for the real exam. These questions will not appear in the exam itself. Students who don't genuinely attempt to solve the questions on their own, and only memorize the solutions, will have a very hard time in the actual exam! This sample exam is online, but the real exam will be given in person, at a time and place indicated on the course website. THIS IS NOT THE ACTUAL EXAM! If you need any clarifications for these questions, you can ask for them on the course Teams channel. |
Question 1According to observations, stars farther from the center of a galaxy rotate... Question 2Which of the following was observed by the Event Horizon Telescope? Question 3What makes the expansion of the universe accelerate? Question 4In Newtonian mechanics, the speed of light in vacuum... Question 5The relative velocity between Alice and Bob corresponds to a Lorentz factor of 5. Alice measures a proper time of 2 seconds between two events. How much time does Bob measure? Question 6What was the significance of the gravitational wave event GW150914? Question 7What is the difference between the weak equivalence principle and the Einstein equivalence principle? Question 8Which of the following objects bends spacetime the least? Question 9What was the source of the gravitational wave event GW170817? Question 10What will be the advantage of putting a gravitational wave detector in space compared to detectors on Earth? Question 11In Eddington experiment, why was it important to measure the position of the stars at nighttime before the eclipse? Question 12Which of the following is a stellar black hole? Question 13You are jumping from a tree down to the ground. According to the Einstein equivalence principle, while you are falling, you're... Question 14What is an Einstein ring? Question 15I live on the 24th floor. Compared to my friend who lives on the 12th floor, I experience time... Question 16The Schwarzschild radius of a black hole with 10 solar masses is around 30 km. What is the Schwarzschild radius of a black hole with 50 solar masses? Question 17Why don't we notice special-relativistic effects like time dilation in our daily lives? Question 18Geodesics inside the event horizon... Question 19Galaxy A is half as far from us compared to Galaxy B. According to Hubble's law, this means that Galaxy A... Question 20How did LIGO provide evidence for gravitational waves in 2015? Question 21The general-relativistic prediction for the perihelion precession of Mercury was... Question 22When the cosmic microwave background was released, the universe became... Question 23What is the Einstein cross? Question 24How did the Hulse-Taylor pulsar provide evidence for gravitational waves in 1974? Question 25I live on the 23rd floor, and my friend lives on the 15th floor. If I send a radio wave to my friend, the wave will be...
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