This question has been annoying me for quite some time now, can someone explain this for me please?
I'm not good at physics, but I think it actually means that the mercury goes from a 'higher' energy level, until it becomes unstable and it goes on a lower energy level in its ground state, which releases a type of photon from that energy gap. What does the mark scheme say?
I'm not good at physics, but I think it actually means that the mercury goes from a 'higher' energy level, until it becomes unstable and it goes on a lower energy level in its ground state, which releases a type of photon from that energy gap. What does the mark scheme say?
oh i was looking at the wrong part in the markscheme.. it is simply the atoms gain energy and move to higher energy levels.
Well, the question says that the waves are longitudinal. Longitudinal waves oscillate back and forth along the line of propagation, so I thought it was D The second part tells us about the wavelength. Wavelength is the distance between two consecutive points at which the oscillations are in phase. So I thought B was the answer, but when I look at the diagram, the lines are different.
Oh, my guess is D on the first one and also B on the second one. Did I get them right?
you looked at the markscheme didnt you lol.. the whole point of this thread is that we discuss these questions and fully understand the concept behind each question
you looked at the markscheme didnt you lol.. the whole point of this thread is that we discuss these questions and fully understand the concept behind each question
knowledge is power
No I didn't! I just guessed and used my own logic. So I got them right? omg... xD