WB JEE 2022
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A battery of emf E and internal resistance r is connected with an external resistance R as shown in the figure. The battery will act as a constant voltage source if
Oxidation states of Cr in K2Cr2O7 and CrO5 are respectively
Domain of \(y = \sqrt {{{\log }_{10}}{{3x - {x^2}} \over 2}}\) is

A particle is moving in an elliptical orbit as shown in figure. If \(\overrightarrow p\), \(\overrightarrow L\) and \(\overrightarrow r\) denote the linear momentum, angular momentum and position vector of the particle (from focus O) respectively at a point A, then the direction of \(\overrightarrow \alpha\) = \(\overrightarrow p\) \(\times\) \(\overrightarrow L\) is along.
The correct order of acidity of the following hydra acids is
For the mapping \(f:R - \{ 1\} \to R - \{ 2\}\), given by \(f(x) = {{2x} \over {x - 1}}\), which of the following is correct?