Diffraction of Waves
Physics ⇒ Waves and Sound
Diffraction of Waves starts at 10 and continues till grade 12.
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See sample questions for grade 12
A laser beam of wavelength 650 nm passes through a slit of width 0.2 mm. Calculate the angle to the first minimum.
A monochromatic light of wavelength 600 nm passes through a slit of width 0.3 mm. Calculate the angle for the first minimum.
A water wave with a wavelength of 2 cm passes through a gap of width 1 cm. Will the wave spread out significantly after passing through the gap?
Calculate the angle θ for the first minimum in a single-slit diffraction pattern if the slit width is 0.5 mm and the wavelength is 500 nm.
Describe how the pattern changes if the wavelength of light is increased in a single-slit diffraction experiment.
Describe the difference between interference and diffraction.
Describe what is meant by the term 'diffraction grating'.
Explain why diffraction is not usually observed when light passes through a doorway.
Explain why radio waves can diffract around buildings more easily than visible light.
Explain why X-rays are diffracted by crystals but not by everyday objects.
In a single-slit diffraction experiment, what happens to the width of the central maximum if the slit width is decreased?
State the condition for the first minimum in a single-slit diffraction pattern.
What is diffraction of waves?
What is the main difference between single-slit and double-slit diffraction patterns?
