NEET 2019 P1 Question Paper - PYQ Mock Test

$\alpha$ -particle consists of:

The speed of a swimmer in still water is $20\text{m/s}$. The speed of river water is $10\text{m/s}$ and is flowing due east. If he is standing on the south bank and wishes to cross the river along the shortest path the angle at which he should make his strokes w.r.t. north is given by:

A particle moving with velocity $\vec{V}$ is acted by three forces shown by the vector triangle $PQR$. The velocity of the particle will:

Two particles $A$ and $B$ are moving in uniform circular motion in concentric circles of radii $r_A$ and $r_B$ with speed $v_A$ and $v_B$ respectively. Their time period of rotation is the same. The ratio of angular speed of $A$ to that of $B$ will be:

A block of mass $10\text{kg}$ is in contact against the inner wall of a hollow cylindrical drum of radius $1\text{m}$. The coefficient of friction between the block and the inner wall of the cylinder is $0.1$. The minimum angular velocity needed for the cylinder to keep the block stationary when the cylinder is vertical and rotating about its axis, will be: ($g=10{\text{m/s}}^2$)