Draw the diffraction pattern of light from a single slit and write the formula for the width of the central maximum. Mention the factors affecting the width of the central maximum.... Draw the diffraction pattern of light from a single slit and write the formula for the width of the central maximum. Mention the factors affecting the width of the central maximum. What may be the maximum possible value of the angle of diffraction? OR State Huygens' principle of secondary wavelets. On its basis verify the laws of refraction of light.

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Understand the Problem

The image contains several physics questions related to wave optics, wave-particle duality, and semiconductor physics. It includes questions about diffraction, Huygens' principle, de Broglie waves, and p-n junctions.

Answer

The width of the central maximum is \( W = \frac{2\lambda L}{a} \). Factors include wavelength, slit width, and screen distance. The maximum diffraction angle is 90 degrees.

The formula for the width of the central maximum in a single-slit diffraction pattern is W = 2λL/a, where:

  • W is the width of the central maximum,
  • λ is the wavelength of light,
  • L is the distance from the slit to the screen, and
  • a is the width of the slit.

The factors affecting the width of the central maximum are:

  1. Wavelength (λ): Increasing the wavelength increases the width.
  2. Slit Width (a): Increasing the slit width decreases the width.
  3. Distance to the Screen (L): Increasing the distance to the screen increases the width.

The maximum possible value of the angle of diffraction is 90 degrees.

Answer for screen readers

The formula for the width of the central maximum in a single-slit diffraction pattern is W = 2λL/a, where:

  • W is the width of the central maximum,
  • λ is the wavelength of light,
  • L is the distance from the slit to the screen, and
  • a is the width of the slit.

The factors affecting the width of the central maximum are:

  1. Wavelength (λ): Increasing the wavelength increases the width.
  2. Slit Width (a): Increasing the slit width decreases the width.
  3. Distance to the Screen (L): Increasing the distance to the screen increases the width.

The maximum possible value of the angle of diffraction is 90 degrees.

More Information

The single-slit diffraction pattern consists of a central bright fringe (central maximum) that is wider than the other bright fringes. The intensity of the bright fringes decreases as you move away from the central maximum.

Tips

A common mistake is to confuse the formula for the position of the minima with the width of the central maximum. Also, remember that a smaller slit width leads to a wider diffraction pattern.

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