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

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




Question 2

According to observations, stars farther from the center of a galaxy rotate...




Question 3

Which of the following is a stellar black hole?




Question 4

Which of the following objects bends spacetime the least?




Question 5

What was the significance of the gravitational wave event GW170817?




Question 6

I 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 7

How did LIGO provide evidence for gravitational waves in 2015?




Question 8

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 30 solar masses?




Question 9

What is an Einstein ring?




Question 10

What makes the expansion of the universe accelerate?




Question 11

I live on the 24th floor. Compared to my friend who lives on the 12th floor, I experience time...




Question 12

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 13

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




Question 14

The Newtonian prediction for the perihelion precession of Mercury was...




Question 15

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




Question 16

When the cosmic microwave background was released, the universe became...




Question 17

What was the source of the gravitational wave event GW170817?




Question 18

Geodesics inside the event horizon...




Question 19

What is the Einstein cross?




Question 20

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




Question 21

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




Question 22

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




Question 23

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




Question 24

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




Question 25

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




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