MCQ
A pencil dipped partially in water appears bent because of:
- AReflection at water surface
- BDiffraction at water surface
- ✓Refraction at water surface
- DWater is flowing
✓
Answer
Correct option: C.
Refraction at water surface
Refraction is a phenomenon in which a light ray incident on a surface separating two transparent media bends at the change of medium.
Snell's law gives the relation between angle of incidence and refraction and the Refractive index of the respective medium.
$\mu_1 \sin (i) = \mu_2 \sin(r)$
where, i, r are the angles of incidence and refraction respectively.
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