When a ray of light passes obliquely from one medium to another, which of the following changes?
A) direction of travel
B) speed, direction of travel, but not wavelength
C) wavelength
D) wavelength, speed, & direction of travel
E) speed
Question 2
A charged particle moving along a direction perpendicular to the plane of a loop of current-carrying wire, and which passes through the loop's center, will experience
A) no magnetic force.
B) a magnetic force perpendicular to its velocity.
C) a magnetic torque.
D) a magnetic force parallel to the loop axis.
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