CROWN

The crown-guest complex is called an inclusion compound. The crown ether allows the inorganic salt to dissolve in non-polar solvents. KMnO_(4) forms a complex with crown ether. In this complex, the host is…. and the guest is…… .

A crown glass prism and a flint glass prism are combined to produce dispersion without deviation. Mean refractive indices of crown , and flint glass are respectively 1.5 and 1.6. Ratio of angle of crown glass prism to that of flint prism is

In a direct vision spectrograph , there are 3 crown glass prisms and 2 flint glass prisms , each of refracting angle 24^(@) . What should be the angle of the crown glass prism , if the refractive index of crown glass for mean colour is 1.52 and that of flint-glass of 1.65 ?

The speed of light in vaccum and in two different glasses is given in the table below: a) Calculate the absolute refractive indexes of flint glass and crown glass. b) Calculate the relative index for light going from crown glass to flint glass.

A combination of two prisms, one of flint and other of crown glass produces dispersion without deviation. The angle of flint glass prism is 15^@ . Calculate the angle of crown glass prism and angular separation of red and violet rays on emergence from the spectroscope. ( mu for crown glass = 1.52, mu for flint glass = 1.65, omega for crown glass = 0.02, omega for flint glass = 0.03 ).

A flint glass prism and a crown glass prism are to be combined in such a way that the deviation of the mean ray is zero. The refractive index of flint and crown glasses for the mean ray are 1.6 and 1.9 respectively. If the refracting angle of the flint prism is 6^@ , what would be the refracting angle of crown prism?

The refractive indices of crown glass for violet and red colours are respectively 1.523 and 1.513. Determine the dispersive power of this glass. If a crown glass prism produces a mean deviation of 40^(@) , what will be the angular dispersion ?

The dispersive powers of crown and flint glasses are 0.02 and 0.04 respectively. In an achromatic combination of lenses the focal length of flint glass lens is 40 cm . The focal length of crown glass lens will be