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Ray optics and optical instruments (part-1)

Feb 4, 2013 17:50 IST
    Ray optics and optical instruments (part-1)
    Ray optics and optical instruments (part-1)

    How important the chapter Ray optics and optical instruments is? Why do we study the chapter Ray optics and optical instruments? How many marks are carried by the chapter Ray optics and optical instruments in class 12 board examinations? What is optics? What is light? What is geometrical optics? What is the sign convention for the magnification?

    Light can be defined as the electromagnetic rays (wavelength of about 400 nm to 750 nm) sensitive to our eyes. It is mainly through light and the sense of vision that we know and interpret the world around us. The light that we see every day is only a fraction of the total energy emitted by the sun incident on the earth

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