Diffraction of Waves
Physics ⇒ Waves and Sound
Diffraction of Waves starts at 10 and continues till grade 12.
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A water wave passes through a gap in a barrier. If the gap is much wider than the wavelength, what will the wavefront look like after passing through?
Describe how the diffraction pattern changes if the wavelength of the incident wave is decreased while the slit width remains constant.
Describe the difference between diffraction and refraction.
Describe what happens to the diffraction pattern if the slit width is decreased while keeping the wavelength constant.
A laser beam of wavelength 500 nm passes through a slit of width 0.25 mm. Calculate the angle to the first minimum.
A single slit of width 0.5 mm is illuminated by light of wavelength 600 nm. Will significant diffraction occur?
A slit of width 0.1 mm is illuminated by light of wavelength 700 nm. Calculate the angle to the first minimum.
A slit of width 0.2 mm is illuminated by light of wavelength 400 nm. Calculate the angle to the first minimum.
The angle θ for the first minimum in a single-slit diffraction pattern is given by which equation? (1) a sinθ = nλ (2) d sinθ = nλ (3) a sinθ = λ (4) d sinθ = λ/2
Which of the following best describes the condition for significant diffraction to occur? (1) The wavelength is much smaller than the obstacle. (2) The wavelength is much larger than the obstacle. (3) The wavelength is comparable to the size of the obstacle. (4) The obstacle is transparent.
Which of the following factors does NOT affect the amount of diffraction? (1) Wavelength (2) Speed of the wave (3) Size of the opening (4) Frequency of the wave
Which of the following is a practical application of diffraction? (1) X-ray crystallography (2) Reflection in mirrors (3) Refraction in lenses (4) Polarization of light
Fill in the blank: Diffraction is a direct consequence of the ________ nature of waves.
Fill in the blank: Diffraction is most noticeable when the size of the opening is ________ to the wavelength of the wave.
Fill in the blank: The amount of diffraction increases as the ________ of the wave increases relative to the size of the opening.
Fill in the blank: The central maximum in a single-slit diffraction pattern is ________ than the other maxima.
A single slit of width 0.5 mm is illuminated by light of wavelength 600 nm. Will significant diffraction occur?
A sound wave with a wavelength of 1.5 m passes through a doorway 1 m wide. Will the sound diffract significantly?
True or False: Diffraction can occur with all types of waves, including sound, light, and water waves.
True or False: Diffraction effects are more pronounced for shorter wavelengths.
