Quiz # 21_2
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Quiz # 21_2
#1
My # 37.35% Then...
10037.35=62.65=0.6265
0.6265*(cos45)^2=0.31325*100=31.325%
answer positive
working on the rest...
My # 37.35% Then...
10037.35=62.65=0.6265
0.6265*(cos45)^2=0.31325*100=31.325%
answer positive
working on the rest...
supr mo Guest
3 and 4
Number 3
The distance between the third order 2slit interference maxima on a screen 1.0928 meter from the slits which are 0.1097 mm apart is 3.48 cm. What is the wavelength of the light in nm (see sheet 20',21) ? Indicate with a positive (negative sign) whether you can (cannot) use the small angle approximation (see sheet 23) for the required accuracy of 1% in the quiz.
3.48E2 / 2 = .0174
tan1 (.0174/1.0928) = .912209303
(sin (.912209303) * .1097E3) / 3 = 582nm
answer is positive
Number 4
In single slit diffraction the slit width is 0.1218 mm and the wavelength is 636 nm. Under which angle (in degrees) does the second order diffraction minimum occur (see sheet 25) ? Indicate with a positive (negative sign) whether at 00 a minimum (maximum) occurs.
(636E9 * 2) / .1218E3 = .010443349
sin1 (.010443349) = .59837
answer is negative
The distance between the third order 2slit interference maxima on a screen 1.0928 meter from the slits which are 0.1097 mm apart is 3.48 cm. What is the wavelength of the light in nm (see sheet 20',21) ? Indicate with a positive (negative sign) whether you can (cannot) use the small angle approximation (see sheet 23) for the required accuracy of 1% in the quiz.
3.48E2 / 2 = .0174
tan1 (.0174/1.0928) = .912209303
(sin (.912209303) * .1097E3) / 3 = 582nm
answer is positive
Number 4
In single slit diffraction the slit width is 0.1218 mm and the wavelength is 636 nm. Under which angle (in degrees) does the second order diffraction minimum occur (see sheet 25) ? Indicate with a positive (negative sign) whether at 00 a minimum (maximum) occurs.
(636E9 * 2) / .1218E3 = .010443349
sin1 (.010443349) = .59837
answer is negative
krolik Guest
number 2
#2 still wont work for me..
i did cos(62.16)^2 = .218
and then i did (cos(62.16))^2 = .218
and i even did cos (62.16^2) = .1068
and i tried them all as negative but i keep getting it wrong. im not getting the calculator syntax right
i did cos(62.16)^2 = .218
and then i did (cos(62.16))^2 = .218
and i even did cos (62.16^2) = .1068
and i tried them all as negative but i keep getting it wrong. im not getting the calculator syntax right
me Guest
#3 & #4
Even when I plug in the given values previously posted on the forum for 3 and 4, my numbers punched out in the calculator are so much larger. Like 25 instead of .xxxx. Am I using the wrong mode or something? Is there a setting i need to change to do these problems? I put it on degrees and then radians and still didnt get the correct answer.
k8 Guest
Re: Quiz # 21_2
how did you know to use 45 degrees for theta in the first question? thanks...
the dude Guest
question 3, i cant get it right
How do you do number 3 i tried doing the equation above and nothing....i even multiplied my answer by 10^9
Guest786 Guest
number 2
The solution posted above is wrong, the conversion from mm to m is incorrect. It should be E4 not E3
yourmom Guest
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