Diverging light rays from a nearby object (a few focal lengths away from the mirror) strike the surface of a concave mirror. After reflecting from the mirror's surface, the rays will converge at
a. the mirror's focal point
b. a point beyond the mirror's focal point
c. a point nearer than the mirror's focal point
d. none of the above
B
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A diatomic molecule has 18 × 10-5 eV of rotational energy in the L = 2 quantum state. What is the rotational energy in the L = 0 quantum state?
A) 9.0 × 10-5 eV B) 6.0 × 10-5 eV C) 3.0 × 10-5 eV D) 1.5 × 10-5 eV E) 0 eV
A light bulb operating at 110 V draws 1.40 A of current. What is its resistance?
A) 12.7 ? B) 78.6 ? C) 109 ? D) 154 ? E) 178 ?
The term terminator refers to the boundary line dividing day and night on the surface of a planet or moon. In this experiment, it is the line between the bright and dark side of the Moon. State the phase of the Moon when the terminator is the (a) sunrise line, (b) sunset line
The magnetic flux through a loop perpendicular to a uniform magnetic field will change
a. if the loop is replaced by two loops, each of which has half of the area of the original loop. b. if the loop moves at constant velocity while remaining perpendicular to and within the uniform magnetic field. c. if the loop moves at constant velocity in a direction parallel to the axis of the loop while remaining in the uniform magnetic field. d. if the loop is rotated through 180 degrees about an axis through its center and in the plane of the loop. e. in none of the above cases.