Question 1:

According to the special theory of relativity, time dilation occurs when:

Explanation: The correct answer is D) An object approaches the speed of light. Time dilation occurs when an object approaches the speed of light relative to an observer, causing time to appear slower for the moving object from the perspective of the observer.

Question 2:

Length contraction is a phenomenon that occurs when:

Explanation: The correct answer is D) An object approaches the speed of light. Length contraction occurs when an object approaches the speed of light relative to an observer, causing the object's length to appear shorter from the perspective of the observer.

Question 3:

Which of the following statements is true regarding time dilation?

Explanation: The correct answer is D) Time dilation has been experimentally confirmed. Time dilation is a real phenomenon predicted by the special theory of relativity and has been confirmed through numerous experiments and observations, including the famous Hafele-Keating experiment.

Question 4:

Which of the following is a consequence of length contraction?

Explanation: The correct answer is C) The object's volume decreases. Length contraction causes the length of an object to appear shorter when it is moving relative to an observer. This contraction in length is accompanied by a decrease in volume.

Question 5:

Time dilation and length contraction are examples of:

Explanation: The correct answer is C) Relativistic phenomena. Time dilation and length contraction are both examples of relativistic phenomena that occur when objects are moving at significant fractions of the speed of light.