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The ratio of angular speeds of the minute hand and the hour hand of a watch is:
$A$ photon and an electron have equal energy $E$. The ratio $\lambda_{\text{photon}} / \lambda_{\text{electron}}$ is proportional to:
In the following pairs,the one in which both transition metal ions are colourless is
The study of the interaction of antigens and antibodies in the blood is known as:
Let $A = \{ (x, y) : y = e^x, x \in R \} $ and $B = \{ (x, y) : y = e^{-x}, x \in R \} $. Then
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