Qualification > Sciences
IGCSE PHYSICS DOUBTS HERE !!!!
~ Miss Relina ~:
--- Quote from: The Secret on May 24, 2011, 06:31:15 pm ---Here's what the MS says:
n = sin i / sin r OR n = sin r / sin i OR 1.49 = sin i / sin 35 C1
(allow 1.49 or refractive index instead of n in any of above)
58.719° to at least 2 s.f. Allow 58.71°
--- End quote ---
i know that but plz if u measure the angles and try to put it in equation of n = sin i / sin r answer will not be 58.7
~ Miss Relina ~:
here is another question
**RoRo**:
--- Quote from: Relina on May 24, 2011, 09:18:42 pm ---i know that but plz if u measure the angles and try to put it in equation of n = sin i / sin r answer will not be 58.7
--- End quote ---
Ohhh, I got you, yea, I get something like 22.6 - I'm sorry, I can't figure out the reason behind this, but as far as I remember when you have to find the refractive index, you use the formula, n=sin i/sin r
~ Miss Relina ~:
--- Quote from: The Secret on May 25, 2011, 05:09:59 am ---Ohhh, I got you, yea, I get something like 22.6 - I'm sorry, I can't figure out the reason behind this, but as far as I remember when you have to find the refractive index, you use the formula, n=sin i/sin r
--- End quote ---
me too hope somebody help ??? soon exam after tommoroow
~ Miss Relina ~:
--- Quote from: Relina on May 24, 2011, 09:23:57 pm ---here is another question
--- End quote ---
and this one anyo ne know how to do it
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