Ray Ray
Light travels in straight paths because of its reflection
It's always straight - as far as the light is concerned. If space is curved then the light follows the curve.
If there is an unobstructed path, it can continue traveling practically forever.
yes
Normally light travels in a straight line. However, it has been demonstrated that gravity can bend the path of light.
The way light travels depends on what is in it's path.
From rectilinear propagation of light.
The way light travels depends on what is in it's path.
mode means path, the way in which light travel, in the fiber means angle in multi mode fiber light can travel in more then one angle so it is called multi mode fiber. but in single mode fiber there is dedicated path or single path through which light beam/source can travel.
Light travels in straight paths because of its reflection
It's always straight - as far as the light is concerned. If space is curved then the light follows the curve.
Light will almost always travel from one place to another along a path that takes the least amount of time. This does not imply that it will take the path involves the least distance all the time.
If there is an unobstructed path, it can continue traveling practically forever.
yes
Normally light travels in a straight line. However, it has been demonstrated that gravity can bend the path of light.
Yes; light is known to bend around planets, due to gravity.
Yes true