[" 22.To observe diffraction the size of an Obstasle "],[" (a) Sbould be of the same order as wat elength "],[" (c) Has no relation to mavelengrh "]

To observe diffraction, the size of the obstacle

To observe diffraction, the size of the obstacle

To observe diffraction, the size of the obstacle

For observing diffraction it is essential to have

Statement I : To observe diffraction of light, the size of obstacle or aperture should be of the order of 10^(-7) m. Statement II : 10^(-7) m is the order of wavelength of visible light.