Why do the nodal, and principal points of a coaxial optical system coincide when the when the whole system is in the same medium?
Why do the nodal, and principal points of a coaxial optical system coincide when the refractive indices on both sides of the system are equal?
How does refractive index change with wavelength? Refraction of light is an example of which property of photons? How refraction index depend on wavelength? Why is the focal length of a convex lens always positive? What is refractive index? How can the refractive index of plastic be determined? Why does the intensity of light become half when a lens is cut horizontally but not if cut perpendicular to principal axis? What is the actual definition of a refractive index? Does any square planar structure show optical isomerism in coordination compound? Does a single photon refract? What is the refractive index of plastic? What is the actual difference between f/1.8 and f/2.2 apertures in camera lenses? Is there a lens that can make light rays parallel no matter the position of the light source? How can I make sure that my glasses are symmetrical? What is Snell's Law of refraction? Why the electrons and nucleons are not visible? Does it related to wavelength of the light? And if Yes How? How do concave and convex mirrors differ? What is refraction index? A monochromatic light changes its wavelength after refraction, so does its colour changes after refraction? Why does light posses a dual nature of both wave and particle only and nothing else? Is there any metamaterial that reflects light coming at a specific angle (e.g. Brewster angle) while being transparent in the other angles? When light Ray in refraction falls normal to the surface, then why doesn't it deviate (I hope deviation is not related to angle of incidence)? What is optics and its field? Why does the pastlight cone converge in a point 'p' in lightcones? Why is a laser more coherent and more monochromatic than ordinary light? How are refractors and reflectors alike? In optics, K is called wavenumber & it is said be inverse of wavelength but I have also seen the formula, K=2*pi/ (wavelength). What is this ambiguity? What is the mechanism behind photon emission in LEDs? Why is Angle of incidence equal to the angle of reflection of a ray? How are reflectors and refractors alike?