Question

Two lasers emit different colors of visible light with the same brightness. If you were to...

  1. Two lasers emit different colors of visible light with the same brightness. If you were to describe the difference in the light from the two lasers, you could say that the light waves have different... (Select all that apply.)

    Intensities

    Spectra

    Frequencies

    Wavelengths

  2. Which of the following terms would be best suited to describe how bright a light source appears to you? (Select all that apply.)

    Wavelength

    Spectrum

    Intensity

    Frequency

  3. Which of the following statements are true? (Select all that apply.)

    Nothing can travel faster than the speed of light in vacuum.

    All wavelengths of light travel at 3 x 108 m/s in empty space (vacuum).

    Light can travel faster than 3 x 108 m/s.

    Different frequencies of light travel at different speeds in empty space (vacuum).

    Light can travel slower than 3 x 108 m/s.
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Answer #1

1.Two lasers emit different colors of visible light with the same brightness. If you were to describe the difference in the light from the two lasers, you could say that the light waves have different...

Answer: Wavelength ,frequency and spectra

Explanation: Different colours indicates different wavelengths and frequencies, Visible light spectrum

2. Which of the following terms would be best suited to describe how bright a light source appears to you?

Answer: Intensity

Explanation: More intensity more number of photons

3. Which of the following statements are true?

Nothing can travel faster than the speed of light in vacuum.

All wavelengths of light travel at 3 x 108 m/s in empty space (vacuum).

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