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!
THIS IS JUST A PRACTICE EXAM!
THE REAL EXAM IS IN PERSON!

If you need any clarifications for these questions, you can ask for them on the course Teams channel.

Question 1

What is the difference between the weak equivalence principle and the Einstein equivalence principle?




Question 2

What will be the advantage of putting a gravitational wave detector in space compared to detectors on Earth?




Question 3

I live on the 3rd floor, and my friend lives on the 15th floor. If I send a radio wave to my friend, the wave will be...




Question 4

You are jumping from a tree down to the ground. According to Newtonian mechanics, while you are falling, you're...




Question 5

According to Kepler's second law, stars farther from the center of a galaxy should rotate...




Question 6

Why don't we notice special-relativistic effects like time dilation in our daily lives?




Question 7

Geodesics outside the event horizon...




Question 8

In the Eddington experiment, why was it important to measure the position of the stars during an eclipse?




Question 9

The 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 10

How did LIGO provide evidence for gravitational waves in 2015?




Question 11

How did the Hulse-Taylor pulsar provide evidence for gravitational waves in 1974?




Question 12

The expansion of the universe is...




Question 13

What is the Einstein cross?




Question 14

What was the significance of the gravitational wave event GW170817?




Question 15

What was the source of the gravitational wave event GW150914?




Question 16

Before the cosmic microwave background was released, the universe was...




Question 17

What is an Einstein ring?




Question 18

Which of the following objects bends spacetime the least?




Question 19

The general-relativistic prediction for the perihelion precession of Mercury was...




Question 20

In Einstein's special theory of relativity, the speed of light in vacuum...




Question 21

Galaxy A is half as far from us compared to Galaxy B. According to Hubble's law, this means that Galaxy A...




Question 22

I live on the 4th floor. Compared to my friend who lives on the 12th floor, I experience time...




Question 23

Which of the following was observed by the Event Horizon Telescope?




Question 24

The relative velocity between Alice and Bob corresponds to a Lorentz factor of 5. Alice measures a proper time of 10 seconds between two events. How much time does Bob measure?




Question 25

Which of the following is a stellar black hole?




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