Physics-
General
Easy
Question
Bright colours exhibited by spider's web, exposed to sunlight are due to
- Interference
- Resolution
- Diffraction
- Refraction
The correct answer is: Diffraction
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Two light beams produce interference pattern to give maxima and minima on the screen. If the intensities of the light beams are in the ratio of 9:4, then the ratio of intensities of maxima and minima is
Two light beams produce interference pattern to give maxima and minima on the screen. If the intensities of the light beams are in the ratio of 9:4, then the ratio of intensities of maxima and minima is
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The axes of the polariser and analyser are inclined to each other at 60° If the amplitude of polarised light emergent through analyzer is A The amplitude of unpolarised light incident on polariser is
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In 
ion central metal ion has d-electrons equal to
In ion central metal ion has d-electrons equal 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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3) [Pt (NH3)4Cl2] Br2 and [Pt (NH3)4Br2] Cl2. Ionization
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
3) [Pt (NH3)4Cl2] Br2 and [Pt (NH3)4Br2] Cl2. Ionization
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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.
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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The ionization constant of in water is 5.6 ×´ 10-10 at 25oC. The rate constant for the reaction of and OH- to form NH3 and H2O at 25oC is 3.4 × 1010 L mol-1 s-1. The rate constant for proton transfer from water to NH3 is
The ionization constant of in water is 5.6 ×´ 10-10 at 25oC. The rate constant for the reaction of and OH- to form NH3 and H2O at 25oC is 3.4 × 1010 L mol-1 s-1. The rate constant for proton transfer from water to NH3 is
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