Question

1. When a ray (narrow beam of light) strikes a surface we measure and angle from a normal (perpendicular line) at the impact point. This angle is called the angle of? 2. What is the "Law of Reflection"? 3. Rays of light entering transparent media will change their direction. This bending of light is known as? 4. When a ray of light enters a transparent media like glass, we measure an angle inside the glass from a continuation of the normal outside. This angle is called the angle of? 5. It has been found that light entering transparent media changes it speed with respect to a vacuum measurement. The speed in the media is always_ _? then in a vacuum. 6. The ratio of the speed of light in a vacuum to that in a media is called the? 7. Write an expression for the ratio in question 6. 8. When light bends in a media an analytical relation between its angle outside and its angle inside is known as?

Answer 1

L perpendicular I Answer / The surface sangle en called of incidence angle 7 | Anmer 21 when ray of light is reflected from a smooth surface the an I angle eflection is equal to angle of incidence and the incident ray, the ray and the narmal to reflected al to surface al- the point of incidenu all die in same -plane Y called law as hedef reflection reflected day In armel neidento sa sunkus Answers The light will change the others dirichon. This is due to snell daw Indiumil | Sat - n A medium 2 This is called bendin light The law of refraction ud bending af o

wry angle res refraction Angle is called anghof incidency muident day li Vacuum medium (glass) Te angle of refraction refracted ray 1 Answers speed of speed of light in light in oth the medin is gover n medium (Answers le speed of lign - a In vacuum n = refractice Index of meduw i called as Refractive ended of gnola medium I Surglass it is If na ū o malicy n= 1.44 Answeert n = 0 7 Raho- Answers gt is called snell raw In sin i = Na final de mi fm