A diver shines light up to the surface of a flat glass-bottomed boat at an angle of 32 degrees relative to the normal. If the indices of refraction of air, water, and glass are 1.0, 1.33, and 1.4 respectively, at what angle does the light leave the glass (relative to its normal)? Answer in units of Degree. This is how I did it...(1.0)(Sin32)=(1.4)(SinX) 22.24 Degrees = Sin X Where did I go wrong? And my other question is: A concave mirror has a focal length of 19 cm. What is the position of the object if the image is erect and is 2 times larger than the object? Answer in units of cm. I have no idea what to do for this question.