Wave Nature of Light MCQ 1
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Questions and Answers

What occurs when a wave passes through a gap or around an obstacle of roughly the same width as its wavelength?

  • Reflection
  • Refraction
  • Interference
  • Diffraction (correct)
  • What is the result of the overlap of two or more waves from different sources?

  • Destructive interference
  • A single resultant wave of different amplitude (correct)
  • Constructive interference
  • No interference
  • What is the primary formula used in calculations involving interference patterns?

  • 𝒏λ = 𝒅/𝐬𝐢𝐧θ
  • 𝒏λ = 𝒅𝐬𝐢𝐧θ (correct)
  • 𝒏/λ = 𝒅𝐬𝐢𝐧θ
  • 𝒏/λ = 𝒅/𝐬𝐢𝐧θ
  • What does 𝒏 represent in the formula 𝒏λ = 𝒅𝐬𝐢𝐧θ?

    <p>Order of diffracted image</p> Signup and view all the answers

    What is the purpose of Young's Double Slit Experiment?

    <p>To demonstrate the constructive and destructive interference of light waves</p> Signup and view all the answers

    What is the primary function of a spectrometer?

    <p>To separate light into its different components</p> Signup and view all the answers

    What is the main purpose of the ozone layer?

    <p>To absorb ultraviolet light and protect the Earth's surface</p> Signup and view all the answers

    What is a common application of infrared radiation?

    <p>Medical imaging and night vision</p> Signup and view all the answers

    What is the main culprit behind the corrosion of the ozone layer?

    <p>Chlorofluorocarbons (CFCs)</p> Signup and view all the answers

    What is the term for the range of light frequencies, including visible light, ultraviolet, and infrared?

    <p>Electromagnetic spectrum</p> Signup and view all the answers

    Study Notes

    Wave Nature of Light

    • Diffraction occurs when a wave passes through a gap or around an obstacle of roughly the same width as its wavelength, resulting in the spreading out of the wave into its geometric shadow.

    Interference of Light Waves

    • Interference occurs when two or more waves from different sources overlap, forming a single resultant wave with a different amplitude.
    • Young's Double Slit Experiment is a demonstration of constructive and destructive interference of light waves.

    Formula for Interference Patterns

    • 𝒏λ = 𝒅𝐬𝐢𝐧θ is the primary formula used in calculations involving interference patterns.
    • 𝑛 represents the order of the diffracted image.
    • 𝜆 represents the wavelength of the light source.
    • 𝑑 represents the grating constant.
    • 𝜃 represents the angle between the zero-order image and the observed image.

    Measuring Angles with Spectrometers

    • A spectrometer is an instrument used to measure 𝜃, the angle between the zero order image and the observed image.

    Electromagnetic Spectrum

    • The electromagnetic spectrum consists of differing wavelengths of light, categorized into separate groups.

    Ozone Layer and Ultraviolet Light

    • The ozone layer surrounding the Earth prevents ultraviolet light from reaching the planet, which is a known cause of cancer.
    • The corrosion of the ozone layer is attributed to CFCs (Chlorofluorocarbons).

    Applications of Infrared Radiation

    • Infrared Radiation is used in night vision technology by law enforcement and militaries.
    • Infrared Radiation is also used in medical imaging.

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