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18 August, 20:06

A beam of light has a wavelength of 24.0 μm (μm = 10 - 6m). What is its frequency?

Choices:

a. 1.25 x 1013 Hz

b. 8.00 x 10-8 Hz

c. 1.25 x 107 Hz

d. 8.00 x 10-11 Hz

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Answers (1)
  1. 18 August, 23:19
    0
    Frequency = 1.25 * 10¹³ Hz

    Explanation:

    Given dа ta:

    Wavelength of light = 24.0 μm (2.4 * 10⁻⁵ m)

    Frequency = ?

    Solution:

    Formula:

    Speed of light = wavelength * frequency

    Speed of light / wavelength = frequency

    Frequency = 3*10⁸ m / s / 2.4 * 10⁻⁵m

    Frequency = 1.25 * 10¹³ s⁻¹

    s⁻¹ = Hz

    Frequency = 1.25 * 10¹³ Hz
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