List of top Physics Questions on Diffraction asked in CBSE CLASS XII

Explain why diffraction of sound is more common in daily experience than that of light.
A parallel beam of monochromatic light falls normally on a single slit of width \(a\) and a diffraction pattern is observed on a screen placed at distance \(D\) from the slit. Explain:
(I) the formation of maxima and minima in the diffraction pattern, and
(II) why the maxima go on becoming weaker and weaker with increasing order \(n\).
Write any two points of difference between interference pattern due to double-slit and diffraction pattern due to single-slit.
A parallel beam of monochromatic light falls normally on a single slit of width \(a\) and a diffraction pattern is observed on a screen placed at distance \(D\) from the slit. Explain:
(I) the formation of maxima and minima in the diffraction pattern, and
(II) why the maxima go on becoming weaker and weaker with increasing order \(n\).
Write any two points of difference between interference pattern due to double-slit and diffraction pattern due to single-slit.
Light of wavelength 750 nm is incident normally on a slit of width 1.5 mm. Diffraction pattern is obtained on a screen 1.0 m away from the slit. Find the distance of the nearest point from the central maxima at which the intensity is zero.
“You cannot see a person standing on the other side of a boundary wall but can hear him.” Explain with reason.