question_answer

The angular width of the central maximum of the diffraction pattern in a single slit (of width a) experiment, with \[\lambda \] as the wavelength of light, is

A) \[\frac{3\lambda }{2a}\]                                              

B) \[\frac{\lambda }{2a}\]

C) \[\frac{2\lambda }{a}\]                                 

D) \[\frac{\lambda }{a}\]

Correct Answer: C

Solution :

                 The central maxima lies between the first minima on both sides. The angular width of central maxima\[=2\theta =\frac{2\lambda }{d}\].