Ask Question
20 March, 04:31

g The index of refraction for water is about What happens as a beam of light travels from air into water? Its speed increases to, and its frequency decreases. Its speed decreases to, and its wavelength decreases by a factor of. Its speed decreases to, and its wavelength increases by a factor of Its speed and frequency remain the same. Its speed decreases to, and its frequency increases.

+2
Answers (1)
  1. 20 March, 08:01
    0
    Its speed decreases to 2.26 x 10^8 m/s, and its wavelength decreases by a factor of 1.33.

    Explanation:

    When beam of light travel from a less dense medium (air) to more dense medium (water), the speed of the light decreases.

    Refractive index of water = speed of light in air / speed of light in water

    Refractive index of water = 1.33

    speed of light in air = 300,000,000 m/s

    Thus, speed of light in water = (300,000,000) / 1.33

    = 2.26 x 10^8 m/s

    From simple wave equation;

    Speed of wave = frequency x wavelength.

    From the equation above, at a constant frequency, as speed decreases, wavelength also decreases. In this question the speed decreased by a factor of 1.33, therefore the wavelength will also decrease by a factor of 1.33.

    Therefore, Its speed decreases to 2.26 x 10^8 m/s, and its wavelength decreases by a factor of 1.33.
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “g The index of refraction for water is about What happens as a beam of light travels from air into water? Its speed increases to, and its ...” in 📙 Physics if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers