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The working principle of an optical fiber is based on:
A real image can be formed on a screen, whereas a virtual image:
Total internal reflection occurs when light travels from a:
The primary colors of light are:
The unit used to measure the power of a lens is:
Which mirror is used as a rear-view mirror in vehicles?
The color with the longest wavelength in the visible spectrum is:
The critical angle is the angle of incidence for which the angle of refraction is:
The splitting of white light into its component colors is called:
The human eye lens is: