If the electric and magnetic forces on a charged particle are not balanced in a velocity selector, what will happen to the particle?

• A) It will be deflected.
• B) It will move in a straight line.
• C) It will stop moving.
• D) It will be accelerated.

The known laws of electromagnetism before James Clerk Maxwell were following, EXCEPT:

• A) Ampere's Law
• B) Gauss's Laws
• C) De Broglie Law
• D) Faraday's Law

Which of the following statements is NOT TRUE about electromagnetic waves?

• A) Electromagnetic waves satisfy the Maxwell's Equation.
• B) Electromagnetic waves can not travel through space.
• C) The receptions of electromagnetic waves require an antenna.
• D) The electromagnetic radiation from a burning candle is un-polarized.

As an object approaches the speed of light, the γ:

• A) Remains constant
• B) Reaches zero
• C) Increases
• D) Decreases

The process for which entropy remains constant is:

• A) Isobaric process
• B) Isothermal process
• C) An irreversible process
• D) A reversible process

In a rainy day, small oil films on water show brilliant colors. This is due to the phenomenon of:

• A) Dispersion
• B) Polarization
• C) Diffraction
• D) Interference

In Newton’s rings the central spot is __________.

• A) Alternate between bright and dark
• B) Can be bright or dark
• C) Always bright
• D) Always dark

When two gases separate by a diathermal wall are in thermal equilibrium with each other:

• A) Only their volumes must be the same
• B) Only their temperatures must be the same
• C) Only their pressures must be the same
• D) They must have the same number of particles

A laser in a compact disc player generates light that has a wavelength of 780 nm in air. The light then enters into the plastic of a CD. If the index of refraction of plastic is 1.55, the speed of this light once enter the plastic is ________.

• A) 3.00 x10^8 m/s
• B) 4.29 x 10^8 km/h
• C) 1.94 x 10^8 m/s
• D) 3.00 x 10^8 km/h

If a laser emits 5×1018 photons per second, and each photon has an energy of 4×10−19 J, determine the total energy emitted per second by the laser.

• A) 10 J/s
• B) 5 J/s
• C) 2.5 J/s
• D) 2 J/s

The primary purpose of the equation of state in thermodynamics is:

• A) To determine the path variables
• B) To explain the conservation of energy
• C) To define the system's internal energy
• D) To relate thermodynamic variables like P, V, and T

A calorie is about:

• A) 4.2J
• B) 250J
• C) 8.3J
• D) 4200J

If white light is used instead of monochromatic light for light interference, what would be the change in the observation?

• A) The shape of the pattern will change from hyperbolic to circular.
• B) Colored fringes will be observed, with a bright fringe at the center.
• C) The bright and dark fringes will change position
• D) The pattern will not be visible.

If 500 J of heat is added to a substance and its temperature increases by 5°C, what is its heat capacity?

• A) 100 J/°C
• B) 105 J/°C
• C) 505 J/°C
• D) 500 J/°C

In a photoelectric effect experiment at a frequency above cut off, the stopping potential is proportional to:

• A) the energy of the least energetic electron after it is ejected
• B) the energy of the least energetic electron before it is ejected
• C) the energy of the most energetic electron before it is ejected
• D) the energy of the most energetic electron after it is ejected

The point where parallel rays converge after reflecting off a convex mirror is called

• A) Apex
• B) Center
• C) Vertex
• D) Focus

If a gas expands into a vacuum, work done by the gas is:

• A) Zero
• B) Equal to the internal energy change
• C) Positive
• D) Negative

Time:

• A) Is continuous
• B) Is static
• C) Is relative
• D) Is an absolute quantity

A certain electromagnetic wave has a frequency of 6×1014 Hz. What is the wavelength of this wave?

• A) 600 meters
• B) 300 nanometers
• C) 6×10−7 meters
• D) 5×10−7 meters

If a phosphorescent material and a fluorescent material are exposed to the same source of light and then observed in the dark, which one will continue to emit light?

• A) The fluorescent material.
• B) Neither material would emit light.
• C) The phosphorescent material.
• D) Both materials equally.