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 1I live on the 24th floor. Compared to my friend who lives on the 12th floor, I experience time... Question 2The 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 3I 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... Question 4What is the difference between the weak equivalence principle and the Einstein equivalence principle? Question 5Galaxy A is twice as far from us compared to Galaxy B. According to Hubble's law, this means that Galaxy A... Question 6What is an Einstein ring? Question 7What was the source of the gravitational wave event GW150914? Question 8What will be the advantage of putting a gravitational wave detector in space compared to detectors on Earth? Question 9What is the Einstein cross? Question 10The expansion of the universe is... Question 11Which of the following is a stellar black hole? Question 12In Einstein's special theory of relativity, the speed of light in vacuum... Question 13According to Kepler's second law, stars farther from the center of a galaxy should rotate... Question 14What was the significance of the gravitational wave event GW150914? Question 15How did the Hulse-Taylor pulsar provide evidence for gravitational waves in 1974? Question 16How did LIGO provide evidence for gravitational waves in 2015? Question 17In Eddington experiment, why was it important to measure the position of the stars at nighttime before the eclipse? Question 18Why don't we notice special-relativistic effects like time dilation in our daily lives? Question 19The Schwarzschild radius of a black hole with 10 solar masses is around 30 km. What is the Schwarzschild radius of a black hole with 30 solar masses? Question 20Which of the following objects bends spacetime the most? Question 21Which of the following was observed by the Event Horizon Telescope? Question 22Geodesics outside the event horizon... Question 23You are jumping from a tree down to the ground. According to Newtonian mechanics, while you are falling, you're... Question 24The general-relativistic prediction for the perihelion precession of Mercury was... Question 25Before the cosmic microwave background was released, the universe was...
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