Help test on 31st and I've got a shit teacher! (1 Viewer)

[Phoenix Fury]

He is actually the head techer for science, no one accept the dux of last year really knows what we are doing and we have a test on the inverse square law and Snell's law on monday and I don't know what to do. PLEASE HELP. A quick explanation is fine and much appreciated.
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[Smith2K7]

I have a practical test on Monday which involves those two. Inverse square law is pretty much straight forward but Snells Law is giving some downs.

When it comes to formulas whihc snells law I only know the last equation like how to find the refracted angle after the perspex.

Nothing I can help you with. But if you know you had extreme troublen after the test talk to your teacher and rearrage another time to do. Happened with my maths test last year.