Compressional waves are LONGITUDINAL WAVES

Q-1: Compressional waves are

1) transverse waves
2) water waves
3) longitudinal waves
4) light waves
ANSWER: 3 -- LONGITUDINAL WAVES

Q-2: In a charged hollow metal conductor, the charge is

1) on the inside surface only
2) on both the inside and outside surfaces
3) on the outside surface only
4) only between the inside and outside surfaces
ANSWER: 3 -- ON THE OUTSIDE SURFACE ONLY

Q-3:  Two negative point charges are 2 meters apart and repel each other with a force of 2 newtons. When the distance between the charges is doubled, the force between them is

1) one fourth as great
2) one half as great
3) twice as great
4) four times as great
ANSWER: 1 -- ONE FOURTH AS GREAT

Q-4:  The rate at which electrical energy is used is measured in

1) volts
2) amperes
3) joules
4) watts
ANSWER: 4 -- WATTS

Q-5:  For an electromagnetic wave traveling in a vacuum, if the magnitude of the intensity of the E field is zero, the magnitude of the intensity of the B field is:

1) zero
2) a negative maximum
3) a positive maximum
4) the square root of 2 times the positive maximum
ANSWER: 1 -- ZERO

Q-6: The effective capacitance of four, 5-microfarad capacitors connected in series is:

1) 0.20 microfarad
2) 0.5 microfarad
3) 1.0 microfarad
4) 1.25 microfarad
ANSWER: 4 -- 1.25 MICROFARAD

Q-7:  The terminal voltage of a cell supplying energy to a circuit is usually less than its emf because of the cell's

1) size
2) internal resistance
3) mass
4) energy
ANSWER: 3 -- INTERNAL RESISTANCE

Q-8: A light ray traveling in benzene strikes the benzene-air surface at the critical angle. The angle of refraction of the light ray is:

1) 30 degrees
2) 60 degrees
3) 90 degrees
4) 180 degrees
ANSWER: 3 -- 90 DEGREES