Author Question: When an object moves close to the speed of light relative to Earth, what happens to its dimensions ... (Read 44 times)

jhjkgdfhk · **on:** Jul 29, 2018

When an object moves close to the speed of light relative to Earth, what happens to its dimensions compared to what they were before it began moving, as measured by an Earth-based observer?

A) Only lengths parallel to the direction of travel are decreased.
B) Only lengths perpendicular to the direction of travel are decreased.
C) All lengths are decreased.
D) No lengths are affected.

Question 2

Which of the following statements are correct? (There could be more than one correct choice.)

A) Spherical aberration, but not chromatic aberration, occurs for lenses.
B) Chromatic aberration, but not spherical aberration, occurs for lenses.
C) Both chromatic aberration and spherical aberration occur for lenses.
D) Both chromatic aberration and spherical aberration occur for spherical mirrors.