Jul 20, 2022, 16:45 IST
This page consists of detail step by step explanation of each and every question which is given in HC Verma physics, in the chapter Introduction of physics which is 18th chapter of HC Verma concept of physics in Volume -1 all questions are solved with proper explanation of all steps to enhance your learning.Read the theory of NCERT text book and solve questions given in the text book with the help of PhysicsWallah NCERT Solutions for class 11 Physics.
A ray of light gives the direction of propagation of light. In absence of an obstacle, the rays advance in straight lines without changing directions. When light meets a surface separating two transparent media, reflection and refraction occur and the light rays bend. Light rays also bend round the edge of an obstacle limiting the wavefront. But as the wavelength of light is usually much smaller than the size of the obstacles, this diffraction effect can usually be neglected. We then deal with geometrical optics .