Light strikes a diamond (n = 2.42) at an angle of 60° relative to the normal to the surface. What is the angle of refraction?
A. 21°
B. 30°
C. 38°
D. 69°
E. 71°
Answer: A
You might also like to view...
A He-Ne laser, which produces light of wavelength 632.8 nm, is used to calibrate a diffraction grating. If the first-order maximum occurs at 20.5° from the central spot, what is the distance between the slits of the grating?
A) 0.905 µm B) 1.81 µm C) 2.20 µm D) 3.62 µm E) 4.52 µm
When initially discovered by Voyager 2, Neptune's rings appeared as ring arcs, and are more clumpy and less regular than most other rings
Indicate whether the statement is true or false
At least 70% of stars have planets. How many planets can astronomers reasonably claim exist in the Milky Way galaxy?
A) at least 70 billion B) at least 1 trillion C) at least 8 D) at least 3000
A boulder following a straight-line path at constant velocity has
A) a net force acting upon it in the direction of motion. B) zero acceleration. C) no forces acting on it. D) none of the above