An Object Is Located 7

question 73

Multiple Choice

An object is located 7.62 cm from the surface of a silvered spherical glass Christmas tree ornament that is 7.62 cm in diameter. The image distance is approximately

• A) 1.52 cm.
• B) -1.52 cm.
• C) 4.24 cm.
• D) -4.24 cm.
• E) infinity because no image is formed.

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Definitions:

Wheatstone Bridge

An electrical circuit used to measure unknown electrical resistances by balancing two legs of a bridge circuit, one leg of which includes the unknown component.

Impedance

The total opposition (combining resistance and reactance) a circuit presents to alternating current.

Capacitance

The ability of a component or circuit to collect and store energy in the form of an electrical charge, measured in Farads.

Bridge Circuit

A circuit that consists of four sections connected in series to form a closed loop.