NEET 2018 Question Paper Mock Test

A metallic rod of mass per unit length $0.5\text{kg/m}$ is lying horizontally on a smooth inclined plane which makes an angle of $30^{\circ }$ with the horizontal. The rod is not allowed to slide down by flowing a current through it when a magnetic field of induction $0.25\text{T}$ is acting on it in the vertical direction. The current flowing in the rod to keep it stationary is:

A thin diamagnetic rod is placed vertically between the poles of an electromagnet. When the current in the electromagnet is switched on, then the diamagnetic rod is pushed up, out of the horizontal magnetic field. Hence the rod gains gravitational potential energy. The work required to do this comes from:

An inductor $20\text{mH}$, a capacitor $100\mu \text{F}$ and a resistor $50\Omega$ are connected in series across a source of emf, $V=10\sin (314t)$. The power loss in the circuit is:

Current sensitivity of a moving coil galvanometer is $5\text{div/mA}$ and its voltage sensitivity (angular deflection per unit voltage applied) is $20\text{div/V}$. The resistance of the galvanometer is:

A body initially at rest and sliding along a frictionless track from a height $h$ just completes a vertical circle of diameter $AB=D$. The height $h$ is equal to: