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1 (a) What is the energy in joules of an x-ray photon, wavelength 1.00 x 10 -10

ID: 2097487 • Letter: 1

Question

1 (a) What is the energy in joules of an x-ray photon, wavelength 1.00 x 10-10m? (b) Convert the energy to eV (hint: see ch 16). (c) If more penetrating x-rays are desired, should the wavelength be increased or decreased? (d) should the frequency be increased or decreased?

2. A material has an index of refraction that increases continuously from top to bottom. Of the three paths shown in the figure below, which path will a light ray follow as it passes through the material?

              



3. A light ray contains both blue and red wavelengths is incident at an angle on a slab of glass. Which of the sketches below represent the most likely outcome?



4. A green light ray in air enters water with n = 1.333. What is the color of the light in the water?

5. Light travels from air into water. Which path is the most likely one that the light follows in the water?


6. Try this simple experiment on your own. Take two opaque cups, place a coin at the bottom of each cup near the edge, and fill one cup with water. Next view the cups at some angle so that the coin is just visible as shown in the left cup. Notice that the coin in the right cup, without water, is not visible. Explain this observation.

Explanation / Answer

2- the figure b gives the trajectory of light

3- figure C is the answer

4-the colour will remain green becos the colour depends on frequency and frequency does not change when it moves from one medium to the other

5- path C

6- Light rays coming from the coin placed inside the cups is bent when they reach the water air interface and the bending is away from the normal. hence u can view the coin placed at the bottom when seen at an angle !! uploading image to make it clearer !! pls rate in the meanwhile