A ray of white light, incident upon a glass prism, is dispersed into its various color components. Which one of the following colors experiences the least angle of deviation?
a. orange
c. green
b. violet
d. red
Question 2
Suppose the ends of a 20-m long steel beam are rigidly clamped at 0C to prevent expansion. The rail has a cross-sectional area of 15 cm2 . What force does the beam exert when it is heated to 40C? (asteel = 1.1 10-5/C, Ysteel = 2.0 1011 N/m2)
a. 2.6 105 N
c. 1.3 105 N
b. 5.6 104 N
d. 6.5 102 N