3. You're in a room (with no windows) that is lit up by "white" light coming from a light bulb. a. What colors of light are being produced by the light bulb? (Hint: the possible colors are red, green, and blue) b. A toy fire truck in the room appears red. What colors of light is the truck reflecting? What colors of light is the truck absorbing? Explain. c. The walls of the room appear blue. What colors of light are the walls reflecting? What colors of light are the walls absorbing? Explain.

1. What would be the result when light passes through two polaroid filters whose polarization axes are parallel to each other? 2. When light reflects off nonmetallic surfaces such as glass, water, or a road surface it becomes partially polarized. Explain

Answer all. It is easy to answer all. Thanks

A vertically polarized light wave passes through the five polarizers as shown. Rank in order, from largest to smallest, the transmitted intensities Ia to Ie.

In the diffraction pattern created by 550nm light, what angle does the initial minimum fall at? a. 60 degrees Fahrenheit Temperatures in the 20 degree range c. A temperature of around 30 degrees Celsius

State following statements whether TRUE or FALSE. i. We can see ordinary solid objects because light is refracted from them. ii. At room temperature the thermal radiation are in infrared region of the spectrum. iii. Our eyes are sensitive to ultraviolet light. iv. Upon heating, objects begin to emit visible light. Temperature of a piece of metal is increases; first it glow with deep red color and then it turns to yellow. V.

2. With the help of Maxwell’s equations, explain the process of wave generation. What is Poynting vector? Explain each part of mathematical equation of the Poynting theorem for EM waves.   .

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A thin film of polystyrene n=1.49 coats a piece of glass n=1.55. When illuminated from above, the dominant color of the light reflected to the observer is 473 nanometers wich is blue. What is the minimum thickness of the thin film? A. 317 nm B. 153 nm C. 159 nm D. 305 nm E. 79.4 nm

In LASIK surgery, a coherent UV light of 193 nm is focused on the corneal tissue.  a. Explain the importance of using light that is all the same wavelength.  b. Explain why UV light is more effective than infrared light at evaporating the corneal tissue