A ray of light travelling in air enters obliquely into water.Does the light ray bend towards the normal or away from the normal?why?
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Thanks for your question !
First of all, we look at the basic terms asked in question. Normal - Here, the Normal is referred as the point where perpendicular (90° angle) drawn at the surface of water. Obliquely - Obliquely means the rays do not fall directly at a surface (a bit horizontal way, we can say).
Water has more optical density than that of air. As, the air's density is 1.225 kg/m³ and 997 kg/m³. But optically, 1.333 of water and 1.0003 of air. Hence, the water molecules are more denser than of air molecules. Well, apart from this, when the light rays will fall obliquely on water, they will bends towards the normal.
But, as the water's density is more than air, light ray's speed will decrease. As it approaches the water it will bend off. Hence, the light ray bends towards the normal.
First of all, we look at the basic terms asked in question. Normal - Here, the Normal is referred as the point where perpendicular (90° angle) drawn at the surface of water. Obliquely - Obliquely means the rays do not fall directly at a surface (a bit horizontal way, we can say).
Water has more optical density than that of air. As, the air's density is 1.225 kg/m³ and 997 kg/m³. But optically, 1.333 of water and 1.0003 of air. Hence, the water molecules are more denser than of air molecules. Well, apart from this, when the light rays will fall obliquely on water, they will bends towards the normal.
But, as the water's density is more than air, light ray's speed will decrease. As it approaches the water it will bend off. Hence, the light ray bends towards the normal.
Answered by
2
Yes, The light ray will bend towards the normal because the water is more denser than air ,so the light ray's speed will be reduced.as it reaches to the water it will bend towards normal. Hence, the light ray bend towards the normal
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