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my ans was 3.6.. but my frnd got 6.67... now we r nt sure that which one is correct :/does anyone remember what was the answer to the question about the circuit with a variable and constant resistor in parallel and the other six ohm resistor in series , the one with the 24 volt battery ? in the part where he asked to calculate the resistance of the constant resistor X ? this ques could be the difference between my getting an A or a B .. please help.... Tense!
p.s im talking about v 22
at the nth maxima angle is 90. sin90=1
sin(90) = 1 is the largest real value that sin(theta) can have. In other words 90 degree is the limit for possible diffraction angle magnitude. Rearrange the diffraction grating formula and you have
lambda/d
i did the same n i got 7 number of maximas... while it is 15 in ms :/sin(90) = 1 is the largest real value that sin(theta) can have. In other words 90 degree is the limit for possible diffraction angle magnitude. Rearrange the diffraction grating formula and you have
sin(theta)=
Clearly n can only take values that result in the R.H.S. being less than or equal to one.
Note that the system is symmetric about the center line from the diffraction grating to the projected image. That means maxima will occur on both sides of the center line with the same angular spacing (and there is also a central maximum on the center line).
GOT IT ?
ohhh..... i didnt knw that... i just calculated the max no. of orders...at the nth maxima angle is 90. sin90=1
so in formula we get
d=nλ ==> n=d/λ
d=1*10^-3/300=3.33X10^6
so n=3.33X10^6/450X10^-9 = 7.4
so maximum order = 7
there are 7 maxima above middle maxima and 7 below
to total 7+7+1=15
physics paper 1 n 3 r left
Look this is what i could do.
Look this is what i could do.
60secs-3000 revolutions
1sec-3000/60=50revolutions
T=1/f
=1/50=20ms
So if its 10ms the wave can be easily be shown on the c.r.o .LOL i asked for an answer and solved it myself
Thanks brother
No effect on time...not sure aboutvanplitude
even I don't get why .39 is multiplied again. :/ohh k i understand but i am confused in the end why did u multiplied .39*.33 again with .39?
lol. thanks yo!
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