Which phenomena can be satisfactorily explained using ray optics? State the assumptions on which ray optics is based.

Ray optics is based on:

State the law on which modern periodic table is based

State the basic fact on which Kirchhoff's first law is based

What is Ray optics or geometrical optics?

Answer the following questions : State the principal on which the working of an electric motor is based.

Answer the following questions : State the principal on which the working of an electric generator is based.

What are the three main assumptions which explain the behaviour of gases?

According to Cartesian sign convention, in ray optics

Ray optics is based on the assumption that light travels in a straight line. Diffraction effects (observed when light propagates through small apertures/slits or around small obstacles) disprove this assumption. Yet the ray optics assumption is so commonly used in understanding location and several other properties of images in optical instruments. What is the justification?

Answer the following questions: Explain the principle on which the launching of a rocket is based.