EducatorSharmin

  Physics      Refraction of Light 1. What is called refraction of light? Ans:  When the ray of light travels obliquely from one transparent medium to another, the bending of a ray of light at the surface of separation of the two media is called the refraction of light.   2. Write Snell's law. Ans: For a fixed pair of media and a fixed colour of light, the ratio of the sine of the angle of incidence to the sine of the angle of refraction always remains constant. This law is known as Snell's law. 3. What is radiation? Ans: Radiation is the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization.           4. What is lens? Ans: A transparent refracting medium confined by two spherical surfaces is called lens. 5. What is prism? Ans: A prism is a transparent optical instrument or object which disperses the light rays into its various constituent light rays. For...