A ray of light is incident on the mid-point of a glass prism surface at an angle of 25.0 with the normal. For the glass, n = 1.55, and the prism apex angle is 40.0. What is the angle of refraction as the ray enters the air on the far side of the prism? The surfaces involved are those of the apex angle.
a. 39.4
c. 22.3
b. 46.0
d. 14.1
Question 2
A brass cube, 10 cm on a side, is raised in temperature by 150C. The coefficient of volume expansion of brass is 57 10-6/C. By what percentage does volume increase?
a. 12
c. 1.1
b. 2.8
d. 0.86
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Alternative for pass-point test
How wide must a narrow slit be if the first diffraction minimum occurs at 12 with laser light ...