The neutrons in an atom:

Q-1;  The neutrons in an atom:

1) are part of the nuclear charge
2) rotate about the nucleus in elliptical orbits
3) vary in number with different isotopes
4) are always equal in number to the total number of protons
ANSWER: 3 -- VARY IN NUMBER WITH DIFFERENT ISOTOPES

Q-2;  Which of the following phenomena suggest that light may be a transverse wave?

1) reflection
2) polarization
3) photoelectric effect
4) diffraction
ANSWER: 2 -- POLARIZATION

Q-3; In simple harmonic motion, the acceleration is:

1) constant
2) proportional to the distance from the central position
3) greatest when the velocity is greatest
4) none of the above
ANSWER: 2 -- PROPORTIONAL TO THE DISTANCE FROM THE CENTRAL
POSITION

Q-4;  When a liquid moves through a pipe having a varying diameter, the pressure against the inside walls of the pipe will be:

1) the same throughout
2) lowest where the diameter is smallest
3) lowest where the diameter is largest
4) lowest where the velocity of flow is lowest
ANSWER: 2 -- LOWEST WHERE THE DIAMETER IS SMALLEST