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Refraction close refractionProcess by which a wave changes speed and sometimes direction upon entering a denser or less dense medium, eg a light ray changes direction when refracted by a lens. of ...
Check NCERT Solutions for CBSE Class 10 Science Physics Chapter 9 Light – Reflection and Refraction: Intext Solutions Page No. -142 Question 1: Define the principal focus of a concave mirror.
W., On the Double Refraction of Light, According to the Principles of Fresnel, The National Magazine, Vol. 1, No. 2 (Aug., 1830), pp. 145-149 ...
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