Wave Nature of Light MCQ 1

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.