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

Geodesics outside the event horizon...




Question 2

What is an Einstein ring?




Question 3

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




Question 4

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




Question 5

Which of the following objects bends spacetime the least?




Question 6

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




Question 7

The expansion of the universe is...




Question 8

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 9

How did LIGO provide evidence for gravitational waves in 2015?




Question 10

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 11

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




Question 12

What was the significance of the gravitational wave event GW170817?




Question 13

You are jumping from a tree down to the ground. According to the Einstein equivalence principle, while you are falling, you're...




Question 14

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




Question 15

What is the Einstein cross?




Question 16

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




Question 17

Which of the following is a stellar black hole?




Question 18

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




Question 19

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 20

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




Question 21

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




Question 22

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




Question 23

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




Question 24

What was the source of the gravitational wave event GW170817?




Question 25

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




© 2025 Barak Shoshany