Question

In diffraction experiment, from a single slit, the angular width of the central maxima does NOT depend upon

• A. Wavelength of light used.
• B. Distance of the slit from the screen.
• C. Width of the slit.
• D. Ratio of wavelength and slit width.

Hint:

In diffraction experiments, the angular width of the central maxima is influenced by the slit width, distance from the screen, and the wavelength of light used.

Answer 1

The Correct Option is A

Step 1: Diffraction at a single slit.
In a diffraction experiment involving a single slit, the angular width of the central maxima depends on the wavelength of light, the distance from the slit to the screen, and the width of the slit. The relationship is given by the formula: \[ \theta = \frac{\lambda}{a} \] where \( \lambda \) is the wavelength of light and \( a \) is the width of the slit.
Step 2: Conclusion.
Thus, the angular width depends on the ratio of the wavelength to the slit width, but it does not directly depend on the wavelength of the light used.
Step 3: Conclusion.
Thus, the correct answer is (A) Wavelength of light used.