In a reversible isothermal process, 600 J of heat is absorbed by a system at a constant temperature of 300 K. The change in entropy (ΔS) for the system is:

• A) ΔS = 180 J/K
• B) ΔS = 20 J/K
• C) ΔS = 2.0 J/K
• D) ΔS = 1.67 J/K

The relationship between the linear and volumetric expansion coefficients is:

• A) β = α3
• B) β = 3α
• C) α = β3
• D) α = 3β

If the temperature of a black body is tripled, how does the power radiated per unit area change according to the Stefan-Boltzmann Law?

• A) Increases by a factor of 9.
• B) Increases by a factor of 81.
• C) Increases by a factor of 27.
• D) Increases by a factor of 3.

The concept of direction is purely:

• A) Absolute
• B) Relative
• C) Relative to the sun
• D) Relative to stars

Ole Rømer estimated the value for the speed of light to be:

• A) 100,000 meters/sec
• B) 225,000 meters/sec
• C) 299,792,458.6 meters/sec
• D) 500,000 meters/sec

The theoretical upper limit for the frequency of electromagnetic waves is:

• A) the greatest x-ray frequency
• B) there is no upper limit
• C) just slightly greater than that of red light
• D) just slightly less than that of blue light

The specific heat of a substance is:

• A) The amount of heat energy per unit mass to raise the substance from its freezing to its boiling point
• B) The amount of heat energy to change the state of one gram of the substance
• C) The amount of heat energy per unit mass to raise the temperature of the substance by1?C
• D) The amount of heat energy per unit mass emitted by oxidizing the substance

According to the kinetic theory of gases, the pressure of a gas is due to:

• A) Average kinetic energy of the molecules
• B) Force of repulsion between the molecules
• C) Change of kinetic energy of molecules as they strike the wall
• D) Change of momentum of molecules as the strike the wall

"LASER" is the abbreviation of:

• A) Light Amplification by the Synthesized Emission of Radiation
• B) Lightwave Amplification by the Stimulated Emission of Rays
• C) Light Amplification by the Stimulated Emission of Radiation
• D) Luminous Amplification by the Stimulated Emission of Rays

The image produced by a convex mirror of an erect object in front of the mirror is always:

• A) Real, erect, and larger than the object
• B) Real, erect, and smaller than the object
• C) Virtual, erect, and smaller than the object
• D) Virtual, erect, and larger than the object

Internal energy of a gas is proportional to:

• A) Temperature
• B) Pressure
• C) Number of molecules
• D) Volume

In meta stable state, electrons reside:

• A) 10-8 sec
• B) 10-13 sec
• C) 10-3 sec
• D) 10-5 sec

The value of absolute zero is:

• A) -32 °F
• B) -273.15 K
• C) 0 K
• D) -460 °C

If the ratio of maximum wavelength for black body radiation is 3:6, the ratio of temperature for a black body is:

• A) 3:6
• B) 6:3
• C) 1:2
• D) 2:1

Fermat's principle, also known as:

• A) The principle of least resistance
• B) The principle of constant speed
• C) The principle of least time
• D) The principle of least frequency

Which instrument would be best suited for observing celestial bodies such as stars, planets, and galaxies?

• A) Simple microscope
• B) Compound microscope
• C) Both simple and compound microscopes
• D) Telescope

The focal length of a spherical mirror is N times its radius of curvature where N is:

• A) 2
• B) 1/2
• C) 1/4
• D) 1

If the source temperature is raised, the efficiency of heat engine will:

• A) Decrease
• B) Remain constant
• C) First increase then decrease
• D) Increase

Heat is defined as:

• A) The degree of hotness.
• B) Flow of internal energy due to a temperature difference.
• C) A type of phlogiston.
• D) A colored, weightless fluid.

There is no way to detect:

• A) State of motion
• B) Accelerated motions
• C) Static motion
• D) Absolute uniform motion