List of top Physics Questions on Viscosity asked in WBJEE

Which one of the following graphs represents the velocity-time (v - t) graph of a small spherical body falling in a viscous liquid?

If a vector \( \vec{v} = 3\hat{i} \) is rotated in the \( x - z \) plane by an angle \( \theta \) with respect to \( x \)-axis in the clockwise direction, then for an observer at \( +y \) axis the vector will be