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प्रश्न
The law of rectilinear propagation states that light travels in a straight line:
विकल्प
In any medium, regardless of its properties
In a heterogeneous and anisotropic medium
In a homogeneous and isotropic medium
Only in vacuum and never inside any material
MCQ
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उत्तर
Rectilinear propagation holds only in a homogeneous medium (uniform composition throughout) that is also isotropic (same optical properties in all directions). Under these conditions, light travels in a straight line.
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