NEET 2016 Question Paper - Phase-I Code B Q X - Mock Test

A uniform circular disc of radius $50\text{cm}$ at rest is free to turn about an axis which is perpendicular to its plane and passes through its centre. It is subjected to a torque which produces a constant angular acceleration of $2.0{\text{rad s}}^{-2}$. Its net acceleration in ${\text{ms}}^{-2}$ at the end of $2.0\text{s}$ is approximately:

What is the minimum velocity with which a body of mass $m$ must enter a vertical loop of radius $R$ so that it can complete the loop?

A small signal voltage $V(t)=V_0\sin \omega t$ is applied across an ideal capacitor $C$:

A uniform rope of length $L$ and mass $m_1$, hangs vertically from a rigid support. A block of mass $m_2$ is attached to the free end of the rope. A transverse pulse of wavelength ${\lambda }_1$ is produced at the lower end of the rope. The wavelength of the pulse when it reaches the top of the rope is ${\lambda }_2$. The ratio ${\lambda }_2/{\lambda }_1$ is:

An inductor $20\text{mH}$, a capacitor $50\mu \text{F}$ and a resistor $40\Omega$ are connected in series across a source of emf $V=10\sin 340t$. The power loss in A.C. circuit is: