Good as I could take a look. Good question. So he said, draw picture, not scale This scheme medically present. The process on their own on this senses angles. So on a given conditions, we know that the weight lenses by 29 meter and the great thing is with 4000 lines with per centimeters and the distance between screening and the grating is 1.6 meters. So sorry it's a graph for the first question. So there's a grating right here on the left side with bunch of limes, and it's interfering with, um, I know in a few waves, since there are so many splits, you know, raisins and its little so, uh, lines, and it's screwing on the rise I and the distance between the grazing and the screen is 1.6 meters. Eso this to some calculations here's so that we can make the A solution for the later questions will be easier for us to soft. So, you said, is 4000 lines per centimeters for the grating, and we can set ableto put on the lines. Oh, pretend toe number two beaters. Since one centimeters, it's 10 to the negative meters then we'll get four times 10 to the power of five lines per meter. And in order to get the separation between truthful is says, uh, it's a relationship. Off each lives is a relationship of the separation distance between each lions front of ratings. So we simply just put 1/4 times 10 to the by climbs a meter, which will give us 2.5 times tension xx Peter. So the separation off a slip off a double street, it's even the 2.5 tests tend to annex six Peter, and full question be We were asking us to determine angle deflection off the second driving. So remember the formula. Full anger, deflection. It's Saturday. I am because I m London, your body I m here is equal to two things. His second order, by Van Atlanta, is fight only now meter and these 2.5 times 10 to 1 and six meter with the separation of absolute. So just we know am musical to so simply discovery. Scientists, to which people two tons by 20 times tend to know tonight mirror because Wanatah meters is equal to tens of 99 meters and we are converting non meter two meters to make sure units is synchronized and so it's two tests by 20 times Central negative nine meters. Divide by 2.5 times. Tend to the name of six meter, which will give us 0.46 You were in order to figure out angry deflection, which is the Anglo data to view. We do, plugging the 0.40 point four or six backing to in verse. I function here and I will get the anguish about 24.6 degree, which is which is wrong about 25 feet. So for the last question, he was asking us to determine the separation of the second order bride spot from the central maximum. Okay, so there's a former for such question, which is why am equals two now does tension say that I am and we know that I am is equal to use the talking about the seconds or rib eye spot, so just simply Why, too? So why tell his equal to l tension data to and we know hosing down L, which is just the distance between the screen and the grating, which is 1.6 meters. So we're planning the data's you look something like this. So it's a 1.6 meters times engine 25 degree. And once we playing all these data to calculators, we'll get something like this, which is you see, uh, Boeing seven or six meters, which is 7.4. I mean, start 74.6 centimeters and less would be the answer for the last one. Thank you.