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In Young' s double slit experiment the two slits are 0.5 mm apart and the screen-slits distance is 100 cm. The distance of the 11th bright fringe from the first bright fringe is found to be 1.178 cm. Find the wavelength of the light used.

Chemistry

Multiple Chioce Question
The terms rate of reaction and rate of appearance (or disappearance) of reactant (or product)
(a) represent one and the same physical quantity
(b) differ by constant
(c) are positive parameters and have same value
(d) may or may not have same value depending upon the stoichiometric coefficient of reactant (or product) in the balanced chemical equation

Mathematics

Multiple Choice Question
Equation of the normal at a point on the parabola y² = 36x, whose ordinate is three times its abscissa is

(a)	2x + 3y + 44 = 0	(b)	2x - 3y + 44 = 0
(c)	2x + 3y - 44 = 0	(d)	2x - 3y = 0

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