Recent content by Syndy

Ok I thought well about it and understood why the answer is B. Thank you for the help.

I don't get it at all.

I believe so . Thank you very much!

I got 6.4 x 10^5 Pa but the answer is only 6.4 x10 Pa I don't know why? Is it a mistake in the answer?!

Ok. Thank you very much.

In the question provided, the i angle is the one from the lamp in the water and the r is the one in the air. What do you think about the answer I attached? Why is the r angle is the one in the water?!

The refrative index law should be sine(i)/sine(r) but in the answer he done the opposite. I included the answer in the bottom of the question.

Thank you very much for your help. I appreciate it.

Thank you very much for your reply. Do you mean I don't put the meter rule over the pivot instead I put it on bench? The answer says the rule to be rule tilted and on bench! Do you think it will be like this? http://www.tiikoni.com/tis/view/?id=d5f23e3 Sorry I don't know how to use the template.

The question says the rule doesn't slip on the pivot but in the answer it says that to draw the rule tilted and in bench and to use suitable number of weight. How to do that? [img=http://s29.postimg.org/3vvsylmaf/image.jpg] image url upload This is the answer for the question...

What do you think about the asnwer in the mark scheme?

I agree. It doesn't follow the law of reflection !

Actually this is not my drawing . I found it in the internet but this is exactly the way I have drawn too.

image upload no size limit http://postimage.org/][/PLAIN] image hosting adult The answer is saying the following, initial reflection + 0 or 1 further reflection only, not at lower surface must be straight and reach within 1cm of end. --------- How come 0 or 1 reflection only ? The length...

Ok the explanation is clear. Thank you very much.