I and II had conservation of momentum. All had conservation of KE.
Yess it would be mirror!
And first is capacitor and 2nd Resistor right? Cause the first question was after long time , where current would be smallest and then capacitor will block all current
@gegri123 that’s what I put
@Shradheya410 How can it be a mirror? You are right about capacitors. I just couldn’t remember the order with which the questions were asked.
Lens will take it to other side , but because they have to reflect back it would be mirror!
Did the question say the device was horizontally or vertically aligned? Or was it unspecified?
I thought it would be horizontal cause verical nothing worked! Well I don’t remember reading anything , not sure
Well how much are you expecting?
@gegri123 Is there anyway I can pm you?
What did you guys get for the water level lowering and then rising again?
Also, what tools do you use to measure acceleration for the pulley?
Vertically a converging lens would work. So far 5 mistakes but I went through almost all of the questions. Considering that for this test the curve will allow at least 8 mistakes for an 800, I am expecting an 800.
I’m pretty sure it’d be a convex mirror because it reflects not with the same angle of incidence (on the other side, the Rays switched). For the instruments needed, I put meter stick and stop watch(guessed)
What did you guys get for the water level lowering and then rising again?
@didierdrogba Can someone explain why you think a converging lens wouldn’t work? Cause I just did the math, it work. Think of two rays coming from points 3m and 1m from mirror respectively. One that comes from 3 would go through 1 on the other side and one that comes from 1 would go through 3. They would still be parallel and they would have changed sides.
How was the test in general? Difficult, easier than June one?
@gegri123 I think what’s confusing everyone is where/what the instrument is. It isn’t the box itself, at least from what I remember reading. It’s what’s inside the box that causes the rays to come out the way they did. A convex mirror horizontally in my opinion would do the job
Then wouldn’t it be a flat mirror?
But a mirror doesn’t change their alignment. If ray K was behind ray L when they got in they would get out so as well.
Only one conserved kinetic energy, right?
Two did as well. It was a perfectly elastic collision.
What did you guys get for the water level lowering and then rising again?