WAVE MOTION-2

$Definition -The refractive index (η) of material is the ratio of the sine of the angle of incidence to the sine of the ang...$

$If are the speeds of light in air and in the film respectively then: - Let n be refraction index of the material of the fi...$

$The diffracted waves subsequently interfere with each other producing regions of reinforcement and weakening - Behind the ...$

$- The waves are diffracted more when the wavelength is longer (iii) (iv) In figure (iii) and (iv) the two waves have the s...$

$TYPES OF DIFFRACTION Diffraction of light is of two types (i) Fraunhofer diffraction (ii) Fresnel diffraction FRAUNHOFER D...$

$For 1st dark band (1st minimum) - Therefore, the general condition for a minimum for a single slit diffraction is Where n ...$

$Application Diffraction gratings are used for producing spectra and for measuring wavelengths accurately. THEORY Suppose p...$

$A diffraction grating has 500 lines per mm when used with monochromatic light of m at normal incidence. At what angles wil...$

$(3)By double refraction (4)By using Nicol prism POLARIZATION BY POLAROIDS Polaroid is an artificial crystalline material w...$