Question
____ have focal points on each side.
Answer
Thin symmetrical lenses have focal points on each side.
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Electromagnetic waves are ____ waves that consist of an oscillating electric field and an oscillating magnetic field.
____ waves are transverse waves that consist of an oscillating electric field and an oscillating magnetic field.
Electromagnetic waves are transverse waves that consist of an ____.
The two fields in electromagnetic waves are ____ to each other and to the direction of propagation of the wave
The ____ is the range of frequencies and wavelengths found in EM waves.
The EM spectrum includes, from lowest to highest energy, ____.