ye question kya keh rha... koi explain k sath solve kar skta hai... plzz
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The answer is 45° .
/_ i = /_r
Therefore angle of incidence = angle of reflection = 45°
Since on the plane three angles are formed so a of all the should be 180° .
Since normal makes the 90° so the sum of other two should be 90° . App the correct option is (b) .
If we take (a) Then = 90+30+30=150°
So the line will not be straight which is not possible .
HOPE IT HELPS!!!!!!!!!
/_ i = /_r
Therefore angle of incidence = angle of reflection = 45°
Since on the plane three angles are formed so a of all the should be 180° .
Since normal makes the 90° so the sum of other two should be 90° . App the correct option is (b) .
If we take (a) Then = 90+30+30=150°
So the line will not be straight which is not possible .
HOPE IT HELPS!!!!!!!!!
Kunnuraj:
are wo option nhi hai...
wo to question hai...
tmko undono ka relation diKhana hai... question phir se padho..
Maine pehle 45 ka dikhaya phir 30 ka
ok
question phr se padho .
question kuch aur hi puch rha hai.
yaha par reflection nhi refraction hua hai...
kuch samjh me aaya to.. samjha dena.... bye..
kam se kam question v expain kar dogi to kaffi hai... qki hmko to question v samjh nhi aaya hai...
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The question says that if the angle of incident is
1. 30° then the angle of refraction is r1
2. 45° then angle of refraction is r2
We have to find the relationship between 30° and 40° angles with respect to refraction
...........
angle i1 = 30o
angle i2 = 45o
According to Snell's law,
R.I. = sin i1 / sin r1;
also,R.I. = sin i2 / sin r2
sin i1 / sin r1 = sin i2 / sin r2
sin 30o / sin r1 = sin 45o / sin r2
1 / (2 X sin r1) = 1 / (root 2 X sin r2)
(2 X sin r1) = (root 2 X sin r2)
sin r1 / sin r2 = 1 / root 2
Try to do further steps .....
1. 30° then the angle of refraction is r1
2. 45° then angle of refraction is r2
We have to find the relationship between 30° and 40° angles with respect to refraction
...........
angle i1 = 30o
angle i2 = 45o
According to Snell's law,
R.I. = sin i1 / sin r1;
also,R.I. = sin i2 / sin r2
sin i1 / sin r1 = sin i2 / sin r2
sin 30o / sin r1 = sin 45o / sin r2
1 / (2 X sin r1) = 1 / (root 2 X sin r2)
(2 X sin r1) = (root 2 X sin r2)
sin r1 / sin r2 = 1 / root 2
Try to do further steps .....
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