What is the angle of incidence on an air-to-glass boundary if the angle of refraction in the glass (n = 1.60) is 25?
a. 40
c. 43
b. 25
d. 16
[Ques. 2] Which of the following has the highest specific heat?
a. ice
b. water
c. steam
d. They are all water, so they all have the same specific heat.
[Ques. 3] If the wavelength of a monochromatic source is 600 nm in vacuum, what is the wavelength from the same source when it passes through a liquid where the speed of light is 2.00 108 m/s? (c = 3.00 108 m/s)
a. 612.5 nm
c. 400 nm
b. 671 nm
d. 392 nm
[Ques. 4] Which of the following involves the greatest heat transfer?
a. One gram of steam at 100C changing to water at 100C.
b. One gram of ice at 0C changing to water at 0C.
c. One gram of water cooling from 100C to 0C.
d. One gram of ice heating from -100C to 0C.
[Ques. 5] If the speed of light through an unknown liquid is measured at 1.67 108 m/s, what is the index of refraction of this liquid? (c = 3.00 108 m/s)
a. 1.80
c. 0.600
b. 1.67
d. 1.20
[Ques. 6] A 6-g lead bullet traveling in 20C air at 300 m/s strikes a flat steel plate and stops. What is the final temperature of the lead bullet? (Assume the bullet retains all heat.) The melting point of lead is 327C. The specific heat of lead is 0.128 J/gC. The heat of fusion of lead is 24.5 J/g.
a. 227C
c. 293C
b. 260C
d. 327C
[Ques. 7] Monochromatic light hits a piece of glass. Assuming the frequency remains constant, what happens to the wavelength in the glass as the index of refraction decreases?
a. decreases
c. increases
b. approaches 3 108 m
d. remains constant
[Ques. 8] 100 g of liquid nitrogen at its boiling point of 77 K is stirred into a beaker containing 600 g of 15C water. If the nitrogen leaves the solution as soon as it turns to gas, how much water freezes? The heat of vaporization of nitrogen is 48 cal/g and that of water is 80 cal/g.
a. none
c. 68 g
b. 29 g
d. 109 g
[Ques. 9] Assuming the frequency remains constant, a monochromatic light ray is transmitted through an glass-to-air boundary, what happens to the wavelength?
a. decreases
c. increases
b. approaches zero value
d. remains unchanged
[Ques. 10] How much heat energy must be removed from 150 g of oxygen at 22C to liquefy it at -183C? (The specific heat of oxygen gas is 0.218 cal/gC, and its heat of vaporization is 50.9 cal/g.)
a. 14,300 cal
c. 4320 cal
b. 9560 cal
d. 2160 cal
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