Question 1:
According to the theory of relativity, spacetime is:
Explanation: The correct answer is B) A four-dimensional continuum where time is combined with the three spatial dimensions. According to the theory of relativity, spacetime is a unified concept that combines space and time into a four-dimensional framework.
Question 2:
Which of the following is true regarding the Lorentz transformations?
Explanation: The correct answer is D) They relate the coordinates and time measurements between different inertial reference frames. The Lorentz transformations describe how the coordinates and time measurements of events change when transitioning between different inertial reference frames in relative motion.
Question 3:
Which of the following is a consequence of time dilation?
Explanation: The correct answer is A) Slowing down of physical processes. Time dilation, as predicted by the theory of relativity, means that time appears to pass slower for objects in relative motion compared to stationary observers. This leads to a slowing down of physical processes, such as the ticking of a clock or the decay of radioactive particles.
Question 4:
Which of the following is true about the speed of light in different reference frames?
Explanation: The correct answer is A) The speed of light is constant in all inertial reference frames. According to the theory of relativity, the speed of light in a vacuum is the same for all observers, regardless of their relative motion. This is a fundamental postulate of the theory and has been experimentally confirmed.
Question 5:
The Lorentz transformations predict that at speeds close to the speed of light:
Explanation: The correct answer is A) Time and space interchange their roles. As an object approaches the speed of light, according to the Lorentz transformations, time dilation becomes more significant, and the time dimension and space dimensions become intertwined. This means that measurements of time and space become dependent on the observer's frame of reference.