3.19 describe an experiment to determine the refractive index of glass, using a glass block
Shine a ray of light through a glass block, measure the angle of incidence and the angle of refraction.
Do sin(i) divided by sin(r) and you will have the refractive index of glass.
more detailed description of experiment if needed: https://theworldaccordingtohughes.wikispaces.com/describe+an+experiment+to+determine+the+refractive+index+of+glass,+using+a+glass+block
THIS IS WAY TOO VAGUE FOR AN EXAM ANSWER. I'VE SEEN THE EXPECTED ANSWER ON A MARK SCHEME FOR AN EXACT QUESTION LIKE THIS AND WITH AN ANSWER LIKE THAT, YOU'D GET 0 MARKS.
A SENSIBLE ANSWER WOULD BE -SHINE A BEAM OF LIGHT ONTO DIFFERENT PLACES ON A RAY BOX AND MEASURE THE ANGLE OF INCIDENCE AND REFRACTION EACH TIME WITH A PRECISE PROTRACTOR. REPEATING THIS MULTIPLE TIMES GIVES YOU A RANGE OF VARIED RESULTS (ACCURACY).
- USE THE EQUATION FOR THE REFRACTIVE INDEX (N=sin i/sin r.) TO PLOT A GRAPH OF RESULTS
- CALCULATE THE AVERAGE OF YOUR RESULTS TO GET AN ACCURATE VALUE OF THE REFRACTIVE INDEX.
you can also use a graph (sin of i over sin of r) and gradient = refractive index
ReplyDeleteThank you so much again
ReplyDeletemore detailed description of experiment if needed:
ReplyDeletehttps://theworldaccordingtohughes.wikispaces.com/describe+an+experiment+to+determine+the+refractive+index+of+glass,+using+a+glass+block
THIS IS WAY TOO VAGUE FOR AN EXAM ANSWER.
ReplyDeleteI'VE SEEN THE EXPECTED ANSWER ON A MARK SCHEME FOR AN EXACT QUESTION LIKE THIS AND WITH AN ANSWER LIKE THAT, YOU'D GET 0 MARKS.
A SENSIBLE ANSWER WOULD BE
-SHINE A BEAM OF LIGHT ONTO DIFFERENT PLACES ON A RAY BOX AND MEASURE THE ANGLE OF INCIDENCE AND REFRACTION EACH TIME WITH A PRECISE PROTRACTOR. REPEATING THIS MULTIPLE TIMES GIVES YOU A RANGE OF VARIED RESULTS (ACCURACY).
- USE THE EQUATION FOR THE REFRACTIVE INDEX (N=sin i/sin r.) TO PLOT A GRAPH OF RESULTS
- CALCULATE THE AVERAGE OF YOUR RESULTS TO GET AN ACCURATE VALUE OF THE REFRACTIVE INDEX.
why dont you make a blog wise one.
Deletethanks
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ReplyDeleteWe know don't worry...
DeleteGood to know!
DeleteAM GAY
ReplyDeleteWhy are you so random?
Deleteu know me mann
ReplyDelete