The smaller the object the wave interacts with, the more spread there is in the interference pattern. Increasing the size of the opening reduces the spread in the pattern.
Q. What is the condition for maximum diffraction?
The maxima lie between the minima and the width of the central maximum is simply the distance between the 1st order minima from the centre of the screen on both sides of the centre. The diffraction pattern and intensity graph is shown below.
Table of Contents
- Q. What is the condition for maximum diffraction?
- Q. What are the minima and maxima condition for diffraction?
- Q. What happens if waves strike a reflective surface at an angle other than 90?
- Q. What would happen to the diffraction pattern if the track width was smaller?
- Q. How does obstacle size affect diffraction?
- Q. Why can sound waves diffract?
Q. What are the minima and maxima condition for diffraction?
(1) The diffraction pattern consists of a central bright fringe (central maxima) surrounded by dark and bright lines (called secondary minima and maxima). (2) At point O on the screen, the central maxima is obtained. Central maxima : The central maxima lies between the first minima on both sides.
Q. What happens if waves strike a reflective surface at an angle other than 90?
Refraction is another way that waves interact with matter. Refraction occurs when waves bend as they enter a new medium at an angle. A: The fish would appear to be where it actually is because refraction occurs only when waves (in this case light waves from the fish) enter a new medium at an angle other than 90°.
Q. What would happen to the diffraction pattern if the track width was smaller?
When the gap width is larger than the wavelength (bottom movie), the wave passes through the gap and does not spread out much on the other side. When the gap size is smaller than the wavelength (top movie), more diffraction occurs and the waves spread out greatly – the wavefronts are almost semicircular.
Q. How does obstacle size affect diffraction?
Diffraction is the spreading out of waves as they pass through an aperture or around objects. It occurs when the size of the aperture or obstacle is of the same order of magnitude as the wavelength of the incident wave. For large apertures the wave passes by or through the obstacle without any significant diffraction.
Q. Why can sound waves diffract?
Diffraction of Sound Waves The amount of diffraction (the sharpness of the bending) increases with increasing wavelength and decreases with decreasing wavelength. In fact, when the wavelength of the wave is smaller than the obstacle or opening, no noticeable diffraction occurs.
