Characteristics of Light Waves

What is the wavelength of microwaves of 3.0 x 10⁹ Hz?

• 0.050 m

• 0.060 m

• 0.10 m

• 0.20 m

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What is the frequency of an electromagnetic wave with a wavelength of 1.0 x 10⁵ m?

• 1 x 10¹³ Hz

• 3.0 x 10³ Hz

• 3.0 x 10¹³ Hz

• 1.0 x 10³ Hz

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When red light is compared with violet light,

• both have the same frequency

• both have the same wavelength

• both travel the same speed

• red light travels faster than violet light

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If you move twice as far from a light source, how does the brightness at the new distance compare to the closer distance?

• 1/8 as bright

• 1/4 as bright

• 1/2 as bright

• twice as bright

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Which electromagnetic waves have the greatest energy?

• ultraviolet

• infrared

• microwave

• radio wave

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Different portions of the electromagnetic spectrum are categorized based on:

• wave speed

• amplitude

• frequency

• wavelength

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Which of the following is not a component of the electromagnetic spectrum?

• light waves

• radio waves

• microwaves

• sound waves

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• direct

• exponential

• inverse

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Which variable in the wave speed equation for light is constant in a vacuum for all electromagnetic waves?

• frequency

• wavelength

• speed

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Which of the following is approximately equal to the accepted value for the speed of light in a vacuum?

• 3.00 x 10⁶ m/s

• 3.00 x 10⁸ m/s

• 30.0 x 10⁸ m/s

• 3.00 x 10⁹ m/s

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