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When a ray of light travelling in glass enters into water obliquely:(a) it is refracted towards the normal (b) it is not refracted at all(c) it goes along the normal (d) it is refracted away from the normal
(d) it is refracted away from the normal
Explanation
When a ray of light travelling in glass (denser medium) enters into water (rarer medium) obliquely, it bends away from the normal.
The angle of refraction or the amount of bending of light depends on the refractive index
1. When light passes through a low refractive index, like air (here water) (faster medium or optically rarer medium) to a high refractive index, like glass (slower medium or optically denser medium), its speed decreases and bends towards the normal.
2. When light passes through a high refractive index, like glass (slower medium or optically denser medium) to a low refractive index, like air (here water) (faster medium or optically rarer medium) its speed increases and bends away from the normal.
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