A line normal to the wavefront showing the propagation of light is called _.
Correct answer: D. Ray of light
- A. Tangent
- B. Radius
- C. Wavelength
- D. Ray of light
Explanation
A line that is drawn normally/perpendicular to the wavefronts in the direction of the light waves is referred to as a light ray.
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About Waves
Progressive waves transfer energy through oscillations, with wavelength, frequency, amplitude and wave speed related by v = fλ; sound speed depends on the medium. Superposition produces interference and stationary waves in strings and organ pipes, while simple harmonic motion describes the oscillation itself and must be distinguished from wave propagation.
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