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Questions

Physics

Multiple Choice Question with Only One Choice Correct
A beam of light consisting of two wavelengths 4500

and 7500

is used to obtain interference fringes in Young' s double slit experiment. The distance between the slits is 1 mm and the distance between the plane of the slits and the screen is 120 cm. What is the minimum distance between two successive regions of complete darkness on the screen?

(a)	4.5 mm	(b)	5.4 mm
(c)	2.7 mm	(d)	1.2 mm

Chemistry

Complete the following reaction
CH₃COOH

ClCH₂COH

...............

Mathematics

If y = 3t - t³, x = 3t² satisfies Ay₂ (y -

) = x + 3 then A is equal to ............. .

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