A ray of light is incident at an angle of 50 degrees with the surface of glass of refractive index of 1.5.Find the deviation of ray when it enters glass.

Question

will.h · Answer

angle of deviation in case of refraction if d=i-r 
you know that right?

will.h · Answer

So anyway we have i = 50 but we don't know the value or r
refractive index = sin(50)/sin(r) = 1.5
sin(r) = sin(50)/1.5 = 0.5107

will.h · Answer

i got the answer 30.7 degrees 
check it back again am not so sure

aaronandyson · Answer

the ans is :
14 degs 38 secs

aaronandyson · Answer

idk how'd they get that

alekos · Answer

You have an angle mix up

aaronandyson · Answer

What's the mix up?

alekos · Answer

The angle of incidence is 40 degrees

alekos · Answer

That's what you need to use in the snells law equation

aaronandyson · Answer

I think the book made a typo.

alekos · Answer

No. The book is correct because I got the same answer 14.5 degrees

aaronandyson · Answer

I copied the question word for word...
please show me your work..?

mrnood · Answer

|dw:1473935741942:dw|

You have misread the question

It says it makes an angle of 50 WITH SURFACE
Therefore the angle of incidence is 40.

The deviation is then 14.63° = 14 deg 38min