Three charged particles are at the corners of an equilateral triangle as shown in the figure below. (Let q = 3.00 µC, and L = 0.850 m.) %3D 7.00 µC 60.0° -4.00 μC Ο (a) Calculate the electric field at the position of charge q due to the 7.00-µC and -4.00-µC charges. | KN/C Î + | kN/C ĵ (b) Use your answer to part (a) to determine the force on charge q. mN î + mN j

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Applications Of Reflection Of Light

When a light ray (termed as the incident ray) hits a surface and bounces back (forms a reflected ray), the process of reflection of light has taken place.

Sign Convention for Mirrors

A mirror is made of glass that is coated with a metal amalgam on one side due to which the light ray incident on the surface undergoes reflection and not refraction.