Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line
that light travels in a straight line
The fact that the light shone through the first card hole travels through all three cards shows that light travels in a straight line. This phenomenon is known as the rectilinear propagation of light.
If uninterrupted, light shone at one cardhole moves straight through all the cardholes in a straight line.
The correct answer is option (C).
Properties of light:It is a form of an energy.Its travels in straight line.When it falls on shiny surface it bounces back which known as reflection of light.
According to question the, given setup of an experiment provides us with the proof that "light travels in the straight line"
Hence, the correct teh correct answer is option(C).
C) that light travels in a straight line
Light travels in a straight line, that is why the light travels through the cards that are arranged in a straight line but also that is why light enters a room through the window and forms angles, you can see it at dawn when light enters a room throug a window it forms an angle, it forms shadows, because light travels in a straight line.