If $(2, 0)$ is a solution of the linear equation $2 x + 3 y = k$ , then the value of $2 \sqrt{k}$ is

4

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6

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5

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2

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Solution

The correct option is D $4$
$2 x + 3 y = k$
Put $x = 2, y = 0$ as it is the solution of the equation.
$2 \times 2 + 3 \times 0 = k$
$\Rightarrow k = 4$
$2 \sqrt{k} = 2 \sqrt{4} = 4$

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