Rank these electromagnetic waves on the basis of their speed (in vacuum). Rank from fastest to slowest. a. Yellow light b

Question

Rank these electromagnetic waves on the basis of their speed (in vacuum). Rank from fastest to slowest.

a. Yellow light
b. FM radio wave
c. Green light
d. X-ray
e. AM radio wave
f. Infrared wave

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Kim Chi 4 years 2021-08-11T08:09:36+00:00 1 Answers 29 views 0

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  1. thuhuong
    0
    2021-08-11T08:11:09+00:00
    Reply

    Answer:

    From fastest speed to slowest speed, the electromagnetic waves are ranked as(up to down):

    d. X-ray

    c. Green light

    a. Yellow light

    f. Infrared wave

    b. FM radio wave

    e. AM radio wave

    Explanation:

    Electromagnetic waves are waves produced as a result of vibrations between an electric field and a magnetic field. The waves have three properties and these properties are frequency, speed and wavelength, which are related by the relationship below

    V = Fλ

    where:\

    V = speed (velocity)

    F = frequency

    λ = wavelength.

    From the relationship above, it is seen that the speed of a wave is directly proportional to its frequency. The higher the frequency, the higher the speed. Therefore, from the list given, the waves with  the highest to lowest frequencies/ from left to right are:

    X-ray (3×10¹⁹ Hz to 3×10¹⁶Hz), Green light (5.66×10¹⁴Hz), Yellow light (5.17×10¹⁴Hz), Infrared wave (3×10¹¹Hz), FM radio wave (10.8×10⁸Hz to 8.8×10⁷Hz), AM radio wave (1.72 × 10⁶Hz to 5.5×10⁵Hz).

    This corresponds to the speed from highest to lowest from left to right.

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