NEET 2016 Question Paper - Phase-II Code XX Mock Test

Three sound waves of equal amplitudes have frequencies $(n-1),n,(n+1)$. They superimpose to give beats. The number of beats produced per second will be:

An electric dipole is placed at an angle of $30^{\circ }$ with an electric field intensity $2\times 10^5\text{N/C}$. It experiences a torque equal to $4\text{N m}$. The charge on the dipole, if the dipole length is $2\text{cm}$, is:

A parallel-plate capacitor of area $A$, separation $d$ and capacitance $C$ is filled with four dielectric materials as shown. If a single dielectric material is to be used to have the same capacitance $C$, then its dielectric constant $k$ is:

The potential difference $(V_A-V_B)$ between points $A$ and $B$ in the given figure is:

A filament bulb $(500\text{W},100\text{V})$ is to be used in a $230\text{V}$ main supply. When a resistance $R$ is connected in series, the bulb works perfectly and consumes $500\text{W}$. The value of $R$ is: