20200518_PSCI_1422_Lab 4_Reflection_Refraction and Total Internal Reflection_Lab_Pokhrel Handout(2)

HELP MEE?

Q2. What is the significance of “phase delay” in Michelson Interferometer. Discuss the use of Michelson interferometer for “wavelength and optical density measurements”.

Q4:- The divergence of laser beam after sending through a telescope is 106 red .What is the diameter of the spot formed on the moon's surface if the laser is directed towards the earth? (The distance from earth to the moon is 3.8*105km).

I1

Monica was using different colored pieces of clear plastic for an art project Her little brother came and scattered the plastic all over the photograph of Name Name Class Date Name 20 the the image she was using as a guide. As she was cleaning up, she noticed that the image appeared differently behind certain colors of plastic. Why was this  A. Certain colors of light pass through, leaving everything else blank or invisible. B. Only the color matching the plastic can pass through, leaving everything else shades of black. C. Only the color matching the plastic can pass through, leaving everything else blank or invisible. D. All colors except the one that matches the plastic can pass through, leavng. that color black

Light is a form of energy that is always moving through matter or space. Lightwave propagates and react differently, either reflect, refract or diffract when itstrike on a surface/penetrate through different mediums.  1.Relate and explain the theory on light phenomena as shown in FigureQ3 (b) with natural phenomena in the sky 2.Predict what will happen when the sun rise and shine brightly; and thesky turned to be cloudy after few hours. Provide THREE (3)justifications and you may include necessary sketches to support youranswer.

1. What is the implication of Huygen's Principle?2. How does diffraction occur in shadows? short answer only, please answer both.

Wavelength nm Color me 400 ***************** 100004 B Editor Suggestions: Showing 10 450 Q Search 525 1. Describe the relationship between color and wavelength. 580 Yellow BOL 600 Am 3. Use this to explain which color slows down the most in a glass block hp B 2. Looking at the spectrum produced by the prism, which colour is bent more? M E 650 I 700

Remote Sensing: Scattering, Rayleigh and other regimes Question: If the direct beam transmission of light of 0.5 micron wavelength is 80%, what will be the transmission of light with a wavelength of 1 micron, assuming no absorption is involved at either wavelength? Question: Sunlight shines through a salt shaker. Should you expect more, less, or the same amount of scattering from blue light compared to red light? How about for light shining through a plume of smoke? Question: A typical radio frequency is 99.5 MHz, while a HD TV broadcast frequency is 600 MHz. Which one is your body position more likely to interfere with and why?

H3

3. A potential technique to kill cancer cells by zapping them with ultrahigh-energy pulses of light that last for an extremely short amount of time. These short pulses scramble the interior of a cell without causing it to explode, as long pulses do. See details at https://www.cancer.gov/about- cancer/treatment/types/surgery/lasers-fact-sheet Model a cancer cell as a circular disk 5.0 um in diameter, and let the light pulse last for 4.0 ns with a power of 2.0 × 10¹2 W. Assume that the energy is spread uniformly over the face of one cancer cell for each pulse. a. How much energy is given to the cell during this pulse? Show your calculation. b. What is the intensity (in W/m²) delivered to the cell? Show your calculation. c. What are the maximum values of the electric and magnetic fields in the pulse? Show your calculation, and don't forget units!

6. Kittel, Ch4-15, Angular distribution of radiant energy flux. (a) Show that the spectral density of radiant energy flux that arrives in the solid angle dis cu cos.d/47, where is the angle the normal to the unit area makes with the incident ray, and u is the energy density per unit frequency range. (b) Show that the sum of this quantity over all incident rays is 4 cu

QUESTION 4 How would you produce coherent light from an ordinary incandescent light bulb? O A. By using a spectral filter, a pinhole and a spectral (color) filter respectively. O B. By using a spectral (color) filter, spectral filter and a telescope respectively. O c. By using a spectral filter, telescope and spectral (color) filter respectively. O D. By using a spatial filter, a pinhole and a spectral (color) filter respectively.

Lunar Orbiter Apollo 8's Speed & Forces: On Dec 21, 1968 when the Apollo 8 spacecraft flew around the far side of the moon, the Radio Frequency signals to Earth was cut off for around 10 minutes. This loss of signal was a daunting time for the flight crew and mission control; Apollo 8 was alone and truly cut off from Earth, venturing where no human had ever gone before. a). How far does light travel in 10 minutes (600 seconds)? b). Given that the Apollo 8 capsule orbited the moon with an orbital radius of 1.852 x 10^6 m and each orbit took about 2 hours. b) Draw a sketch and c) Find the tangential speed of Apollo 8 spacecraft in km/s. d) Given the mass of the Apollo 8 capsule was 2.887 x 10^4 kg and the mass of the Moon is 7:35 x 10122 kg, Use the Universal Law of Gravitation to determine the gravitational force of attraction between the moon and the Apollo 8 spacecraft. and e) Use the centripetal force equation to determine the Centripetal force on the capsule. f) Discuss how your…

Mode Structure of Helium-Neon Laser   The mode structure of a HeNe-laser of wavelength 633 nm is studied with a scanning Fabry-Perrot interferometer. The two laser concave mirrors have the same radius of curvature. On an oscilloscope the following image is obtained.   1- Calculate the frequency difference between TEM 004 and TEM 00q+1

help please

A ray of light would change direction when (Check all that apply): A.)  Changing mediums at an angle of 90° from the surface B.)  changing mediums when directly in line with the surface normal C.)  incident on a shiny, smooth surface D.)  changing mediums at an angle of less than 90° from the surface

explain the steps to find the answer, which equation you are using and why you are using it. Also a small reflection about the problem.  Thanks.

Please answer the questions ASAP!!!

Den is doing an experiment with a laser light and these different objects. Laser Light Object 1 Object 2 Object 3 6 Ben knows that Object 1 reflects light. Which sentence describes the path the light will take when shined at Object 1? F. The light with bounce off in all directions. G. The light will be absorbed. H. The light will bounce off at a right angle. I. The light will pass through the other side.

#42

Q5: Calculate the wavelength of yellow light if the woman connected to the micrometer must be moved a distance of (0.014 mm) in order for fifty fringes to pass through vision?

Lasers and Diffraction Gratings: If you had a grating that contained fewer lines per meter than another, what differences would you expect? Explain.

Can you explain and solve the question please

Q2:What is the mathematical relationship between light intensity and distance? dis

Introduction to Optics; Can we change the color of a light beam? If yes, how (give an example)?

What is the minimum data set that can be interpreted to yield two depths for a 1-interface model?a. One shot into one end of a line of geophones.b. Two shots; one at each end of the line.c. One shot at each end of the line and one at it’s centre.d. As many shots as it takes to get a refraction arrival at every geophone from both directions.