Please help with all questions! Do some experimentation with the laser on the CD
ID: 2305625 • Letter: P
Question
Please help with all questions!
Do some experimentation with the laser on the CD to help answer this question. Which direction will the line of bright dots run if the laser shines through this comb? 1) vertically horizontally c. diagonally (going up to the left) d. diagonally (going up to the right) Would there be a difference in the diffraction dots between shining the laser through the closely-spaced comb teeth versus the widely-spaced comb teeth? 2) Yes, the diffraction dots would be farther apart when using the closely-spaced comb teeth. b. Yes, the diffraction dots would be closer together when using the closely-spaced comb teeth. c. No, there would not be a difference in the diffraction dots. Would there be a difference in the diffraction dots between shining our red laser through the closely- spaced comb teeth versus shining a green laser through the same teeth? 3) a, Yes, the diffraction dots would be farther apart when using the red laser. Yes, the diffraction dots would be farther apart when using the green. No, there would not be a difference in the diffraction dots. . c. 4) Look at the diffraction pattern of dots. Which pattern of wires could produce this? Do some experimentation with the laser on your diffraction grating combined with another group's diffraction grating to help answer this question.Explanation / Answer
1. The correct option is b. horizontally.
The dots will be in the same direction as that of the spacing in the grating. In the figure, the spacing is in horizontal direction. Hence, the dots will also be in horizontal direction.
2. The correct option is a. Yes, the diffraction dots would be farther apart when using the closely-spaced comb teeth.
The spacing between the dots are inversely proportional to the spacing of the grating. So when the spacing in grating is more, the spacing in the dots will be less.
3. The correct option is a. Yes, the diffraction dots would be farther apart when using the red laser.
Also, the spacing between the dot is proportional to the wavelength. So when the wavelength is more, the spacing between the dot should be more.
4. The correct option is E.
As the dots are in 2D fashion, the grating should also be in both the directions. From the diffraction dots, the horizontal spacing is less than the vertical spacing. As the spacing between is dot is inversely proportional to the spacing between the lines, lower spacing in horizontal direction will correspond to the higher spacing in the horizontal line spacing. So, the correct option should be E
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.