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Geometrical Optics — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsGeometrical Optics1 Mark
Question
If the light moving in a straight line bends by a small but fixed angle, it may be a case of:
  1. Reflection.
  2. Refraction.
  3. Diffraction.
  4. Dispersion.
✓

Answer

  1. Reflection.
  2. Refraction.
Explanation:
When the light strikes on a surface nearly parallel to it, it then bends by a small and fixed angle after reflection. Also, when the light travels from one medium to another with slight differences in their refractive indices, it bends by a small angle. Thus, the bending of light by a small but fixed angle can be the case of either reflection or refraction.

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