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Physics-

General

Easy

Question

When $square root of 3$ ampere current is passed in a tangent galvanometer, there is a deflection of 30° in it. The deflection obtained when 3 amperes current is passed, is

30°
45°
60°
75°

The correct answer is: 45°

$i proportional to tan invisible function application theta rightwards double arrow fraction numerator i subscript 1 end subscript over denominator i subscript 2 end subscript end fraction equals fraction numerator tan invisible function application theta subscript 1 end subscript over denominator tan invisible function application theta subscript 2 end subscript end fraction rightwards double arrow fraction numerator square root of 3 over denominator 3 end fraction equals fraction numerator tan invisible function application 3 0 to the power of o end exponent over denominator tan invisible function application theta subscript 2 end subscript end fraction rightwards double arrow theta equals 4 5 to the power of o end exponent$

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If the normal at the points P_i (x_i, y_i), i = 1 to 4 on the hyperbola xy = c² are concurrent at the point Q(h, k), then $fraction numerator open parentheses x subscript 1 end subscript plus x subscript 2 end subscript plus x subscript 3 end subscript plus x subscript 4 end subscript close parentheses open parentheses y subscript 1 end subscript plus y subscript 2 end subscript plus y subscript 3 end subscript plus y subscript 4 end subscript close parentheses over denominator x subscript 1 end subscript x subscript 2 end subscript x subscript 3 end subscript x subscript 4 end subscript end fraction$ is equal to

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According to Huckel’s rule a compound is said to be aromatic if it contains

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Chemistry-General

parallel

structure is

structure is

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The equations of two diameters are $y equals x$ and $3 y equals negative 2 x$ satisfying the condition mentioned above. Then the eccentricity of the ellipse is

parallel

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