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General
Easy
Question
Two coherent sources are placed 0.9 mm apart and the fringes are observed one metre away. The wavelength of monochromatic light used if it produces the second dark fringes at a distance of 10 mm
The correct answer is:
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Two coherent monochromatic light beams of intensities I and 4I are superposed. The maximum and minimum possible intensities in the resulting beam are
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Bright colours exhibited by spider's web, exposed to sunlight are due to
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On heating NaCl + K2Cr2O7 + H2SO4 conc., the gas that comes out is
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Which of the following pairs of isomers and types of isomerism are correctly matched
1) [Co (NH3)5(NO2)] Cl2 and [Co (NH3)5(ONO)] Cl2 linkage
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Which of the following pairs of isomers and types of isomerism are correctly matched
1) [Co (NH3)5(NO2)] Cl2 and [Co (NH3)5(ONO)] Cl2 linkage
2) [Cu (NH3)4] [PtCl4] and [Pt (NH3)4] [CuCl4] ------ Coordination
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Energy levels A, B, C of a certain atom corresponds to increasing values of energy i.e. EA < EB < EC. If 
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Energy levels A, B, C of a certain atom corresponds to increasing values of energy i.e. EA < EB < EC. If , and are the wavelengths of radiations corresponding to the transitions C to B, B to A and C to A respectively, which of the following statement is correct.
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