Which of the following actions performed on a rough metal surface significantly increases the proportion of incident light that undergoes specular reflection? Matte finish painting Polishing Etching Sand blasting

A high-quality diamond may be quite clear and colorless, transmitting all visible wavelengths with little absorption. Explain how it can sparkle with flashes of brilliant color when illuminated by white light.

A ray of light enters a liquid from air. If the angle between the incident and refracted rays is 150 and the angle between the reflected and refracted rays is 60, find the refractive index of the liquid. Assume the refractive index of air is 1.00.

Light can leave a surface through two fundamental processes: self-emission and reflection. Explain both of them and provide examples

answer following: 1.an ink dot on white procelain dish appears dark. When dish is raisied to very large temerature the dot appears brighter than surrounding . why? 2. why do heels crack in winter? what effect does application of lubricants have on heels? 3.the earth is recieving heat from sun continiously. in this case, the earth will be as hot as a furnace in no time. As such thing does not happen, what compensatory measure does earth have to maintain temperature?

Calculate the critical angle for an ethanol-air boundary. (hint: Use table of indices of refraction if necessary).

How can a clear object be transparent and visible at the same time?

Consider an opaque body capable of absorbing blue light and illuminated by (a) white light and (b) magenta light. What will be its color for each case?

POSSIBLE POINTS In the summer, people often wear light colored clothing to stay cool. This is a good idea because light colors tend to electromagnetic waves. reflect refract absorb 1 4 7 8. 9.

(A) Show a model as to how white light interacts with a t-shirt that appears to an observer as red and white striped in terms of light wave absoprtion and reflection.  (B) Make a model of what will happen when white light is shined through a blue and green filter stacked on top of one another. It will appear black because white light is absorbed but show this in a skectch.