(A) For a conditional statement of the form $p \to q$,the contrapositive is defined as $\sim q \to \sim p$.Here,$p$ is 'two numbers are not equal' and

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If the squares of two numbers are equal,then the numbers are equal.

(A) For a conditional statement of the form $p \to q$,the contrapositive is defined as $\sim q \to \sim p$.Here,$p$ is 'two numbers are not equal' and $q$ is 'their squares are not equal'.Therefore,$\sim q$ is 'the squares of two numbers are equal' and $\sim p$ is 'the numbers are equal'.Thus,the contrapositive is: 'If the squares of two numbers are equal,then the numbers are equal'.

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The contrapositive of the statement 'If two numbers are not equal,then their squares are not equal' is:

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A
If the squares of two numbers are equal,then the numbers are equal.
B
If the squares of two numbers are equal,then the numbers are not equal.
C
If the squares of two numbers are not equal,then the numbers are not equal.
D
If the squares of two numbers are not equal,then the numbers are equal.

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The contrapositive of the statement 'If two numbers are not equal,then their squares are not equal' is:

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Accumulation of which of the following molecules in the muscles occurs as a result of vigorous exercise?

Three moles of an ideal monoatomic gas perform a cycle as shown in the figure. The gas temperatures in different states are: $T_1 = 400\, K, T_2 = 800\, K, T_3 = 2400\, K$ and $T_4 = 1200\, K$. The work done by the gas during the cycle is .... $kJ$.

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Along the $x$-axis,three charges $\frac{q}{2}, -q$ and $\frac{q}{2}$ are placed at $x=0, x=a$ and $x=2a$ respectively. The resultant electric potential at a point $P$ located at a distance $r$ from the charge $-q$ (where $r > a$) is ($\varepsilon_0$ is the permittivity of free space):

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