You shine a laser pointer through a diffraction grating and measure the pattern
ID: 1272973 • Letter: Y
Question
You shine a laser pointer through a diffraction grating and measure the pattern on the left below with your by moving your photodetector horizontally along the table. Which of the gratings did the laser shine through (i.e., which is the correct orientation and type of grating to give this pattern)? For all slits, the width is 0.3 mm. The slits in grating B are 1.0 mm apart. The circle has a diameter of 2.0 mm.
Slit A
Slit B
Slit C
Slit D
Describe how the pattern you measure with the detector would change if instead of the grating in the Part A., we shine the laser through the following grating: The width of the slit is 1.0 mm.
The pattern would have the same structure but the features would get closer together.
The pattern would have the same structure but the features would spread out.
The orientation of the pattern would change from horizontal to vertical.
The pattern would have narrow fringes forming the original shape.
There is not enough information to comment on the approximate shape and features of the diffraction pattern.
Slit A
Slit B
Slit C
Slit D
Explanation / Answer
1)
ANSWER IS A
since there will be central maxima formed when light pass from above of the slit .
2)
The pattern would have the same structure but the features would spread out.
Related Questions
drjack9650@gmail.com
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.