[ Question? ]
How does light travel?
A. Light travels in a zigzag line
B. Light travels in a curved line.
C. Light travels in a straight line.
D. Light travels in a diagonal line.
[ Answer: ]
- C. Light travels in a straight line.
[ Explanation* ]
Light travels as waves. These are transverse waves, like the ripples in a tank of water. The direction of vibration in the waves is at 90° to the direction that the light travels. Light travels in straight lines, so if you have to represent a ray of light in a drawing, always use a ruler.
