True or False? 1. When an object experiences thermal expansion, any holes in the

Question

True or False? 1. When an object experiences thermal expansion, any holes in the object will become larger. 2. Molar specific heat varies depending upon the type of process. 3. N is the symbol used for the number of moles of a substance. 4. One mole of a substance has a mass in kilograms that is equal to the atomic or molecular mass of the substance in atomic mass units (u) 5. The work done by a system is the 6. A reversible engine has an efficiency of 7. Snell's law applies to refraction. negative of the work done on the system 100%. 8. If a ray of light is headed toward a medium of smaller index of refraction, and the angle of incidence is smaller than the critical angle, it will be totally internally reflected. 9. A convex mirror always produces a virtual image. 10. When light enters a medium in which it slows down, the wavelength of the light is decreased. 11. A light ray bends toward the normal as it travels from air to water.

Explanation / Answer

1. True,

2.True,

3. flase as the the symbol used for the numebr of moles is small n

4.False as the one mole if a substance has mass equal to in grams.

5.True

6.False, a reversible engine has an efficiency of at max a Carnot's cycle.

7.True

8.False the angle must be equal to or greater that the critical angle.

9.False there are some cases where the convex mirror produces a real image(magnified)

10.True

11.True

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