Which is not an optically active substance?
Correct answer: C. water
- A. sugar
- B. tartaric acid
- C. water
- D. sodium chlorate
Explanation
Water is not an optically active substance. Optically active substances, such as sugar and tartaric acid, exhibit optical activity by rotating the plane of polarized light.
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About Optics
Light is studied through reflection, refraction, dispersion, interference, diffraction and polarization, linking ray behavior with its wave nature. Questions may involve mirrors, lenses, optical instruments, refractive index and image formation, while geometrical optics deals with rays and wave optics explains effects such as interference and diffraction.
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