Wave Optics Tes...

The diffraction effect can be observe in

When light is incident on a diffraction grating the zero order principal maximum will be

In order to see diffraction the thickness of the film is

Diffraction effects are easier to notice in the case of sound waves than in the case of light waves because

Direction of the first secondary maximum in the Fraunhoffer diffraction pattern at a single slit is given by (a is the width of the slit)

A parallel monochromatic beam of light is incident normally on a narrow slit. A diffraction pattern is formed on a screen placed perpendicular to the direction of incident beam. At the first maxima of the diffraction pattern the phase difference between the rays coming from the edges of the slit is

Diffraction and interference of light suggest

A light wave is incident normally over a slit of width 24 × 10^–5 cm. The angular position of second dark fringe from the central maxima is 30°. What is the wavelength of light ?

The condition for observing Fraunhoffer diffraction from a single slit is that the light wavefront incident on the slit should be

To observe diffraction the size of an obstacle