Question

"During refraction of light through the glass slab, incident ray and emergent ray are parallel to each other." Explain.

Answer 1

Explanation: See, during refraction, when the light enters the denser medium from the rarer medium it refracts towards the normal. when light enters the rarer medium from denser medium it refracts away from the normal. So, suppose there is a glass slab, as air is the rarer medium and glass is denser medium so when light enters it, as said above it refracts and the incident ray ll emergent ray as shown in the figure. also as incident angle is congruent to emergent angle they booth are parallel by corresponding angle test. pls pls pls mark it as brainliest