IPC Unit 10 Review UPDATED QUESTIONS
AND CORRECT ANSWERS
Amplitude - CORRECT ANSWER the maximum displacement of particles (positive or
negative) during wave motion
Beats - CORRECT ANSWER a series of alternating reinforcements and cancellations
produced by the interference of the waves of different frequencies
Circular wave - CORRECT ANSWER a wave in which wave energy causes both
transverse and longitudinal motion, causing an overall circular pattern of particle movement
Concave lens - CORRECT ANSWER a diverging lens, thinner in the middle than at the
edges, which causes refracted rays to diverge, producing a virtual image
Concave mirror - CORRECT ANSWER a converging, or parabolic, mirror; reflected
rays converge at the focal point
Convex lens - CORRECT ANSWER a converging lens, thicker in the middle than at
the edges, which causes refracted rays to converge at the focal point
Convex mirror - CORRECT ANSWER a diverging mirror that always produces a
virtual image
Doppler effect - CORRECT ANSWER the apparent change in frequency perceived
when the source of a sound and an observer are approaching or moving away from each other
Electromagnetic spectrum - CORRECT ANSWER the visible and invisible radiations
emitted by objects
Electromagnetic waves - CORRECT ANSWER waves in which electric and magnetic
fields oscillate
AND CORRECT ANSWERS
Amplitude - CORRECT ANSWER the maximum displacement of particles (positive or
negative) during wave motion
Beats - CORRECT ANSWER a series of alternating reinforcements and cancellations
produced by the interference of the waves of different frequencies
Circular wave - CORRECT ANSWER a wave in which wave energy causes both
transverse and longitudinal motion, causing an overall circular pattern of particle movement
Concave lens - CORRECT ANSWER a diverging lens, thinner in the middle than at the
edges, which causes refracted rays to diverge, producing a virtual image
Concave mirror - CORRECT ANSWER a converging, or parabolic, mirror; reflected
rays converge at the focal point
Convex lens - CORRECT ANSWER a converging lens, thicker in the middle than at
the edges, which causes refracted rays to converge at the focal point
Convex mirror - CORRECT ANSWER a diverging mirror that always produces a
virtual image
Doppler effect - CORRECT ANSWER the apparent change in frequency perceived
when the source of a sound and an observer are approaching or moving away from each other
Electromagnetic spectrum - CORRECT ANSWER the visible and invisible radiations
emitted by objects
Electromagnetic waves - CORRECT ANSWER waves in which electric and magnetic
fields oscillate
