The electromagnetic spectrum

Which wave has a longer wavelength?

• A

• B

Which wave has a shorter wavelength?

• A

• B

Which wave has a higher frequency?

• A

• B

Which wave has a lower frequency?

• A

• B

A beam of light has a wavelength of 600 nm in air. What is the frequency of the light (c = 3x10⁸ m/s)?

• 5 x 10¹⁴ Hz

• 2 x 10¹⁴ Hz

• 3 x 10¹⁴ Hz

• 6 x 10¹⁴ Hz

Find the frequency of an electromagnetic wave with a wavelength 2.75 × 10^–8 m.

• 1.10 Hz

• 1.09 × 10¹⁶ Hz

• 9.17 × 10¹⁵ Hz

• 9.17 × 10¹⁶ Hz

What is the variable c used for?

• frequency

• wavelength

• Energy

• speed of light

The frequency of light is 7.14 x 10¹⁴ Hz. What is the energy?

• 4.73 x 10^-19 J

• 1.20 x 10^-48 J

• 1.13 x 10^-17 J

• 4.97 x 10^-49 J

Which wave has a greater frequency?

• A

• B

How are frequency and wavelength related?

• As frequency increases, wavelength gets shorter

• As frequency increases, wavelength gets longer

• As frequency increases, wavelength gets lower

• As frequency increases, wavelength gets higher