1. Assertion: The light emerges from a parallel-sided glass slab in a direction perpendicular with that in which enters the glass slab.
Reason: The perpendicular distance between the original path of incident ray and emergent ray coming out of glass slab is called lateral displacement of the emergent ray of light.
Reason: The perpendicular distance between the original path of incident ray and emergent ray coming out of glass slab is called lateral displacement of the emergent ray of light.
2. Assertion: When a pencil is dipped slantwise into water, it looks broken or bent at the water surface.
Reason: The effect is caused by refraction of light as it moves from the denser medium to the rarer medium.
Reason: The effect is caused by refraction of light as it moves from the denser medium to the rarer medium.