List of top Questions asked in MET- 2018

The magnitude of current $i$ in ampere unit is}
A photon and an electron have equal energy $E$. $\lambda_{\mathrm{photon}} / \lambda_{\mathrm{electron}}$ is proportional to
A long solenoid of length $L$ has a mean diameter $D$. It has $n$ layers of winding of $N$ turns each. If it carries a current $i$, the magnetic field at its centre will be
If refractive index of a material of equilateral prism is $\sqrt{3}$, then angle of minimum deviation of the prism is}
In Young's double slit experiment, the intensity of light coming from one of the slits is double the intensity from the other slit. The ratio of the maximum intensity to the minimum intensity in the interference fringe pattern observed is
The distance between charges $5\times 10^{-11}\mathrm{C}$ and $-2.7\times 10^{-11}\mathrm{C}$ is $0.2\mathrm{m}$. The distance at which a third charge should be placed from the second charge in order that it will not experience any force along the line joining the two charges is
Small rain drops of the same size are charged to potential $V$ volt each. If $n$ such drops coalesce to form a single drop, then the potential of the bigger drop is
A small sphere is charged to a potential of $50\mathrm{V}$ and a big hollow sphere is charged to potential of $100\mathrm{V}$. Charge will flow from the smaller sphere to the bigger one when
An electric motor operates on a $50~\mathrm{V}$ supply and a current of $12\mathrm{A}$. If the efficiency of the motor is $30%$, what is the resistance of the winding of the motor?
A galvanometer of resistance $20\Omega$ is to be converted into an ammeter of range $1\mathrm{A}$. If a current of $1\mathrm{mA}$ produces full scale deflection, the shunt required for the purpose is}
The path difference between the two waves $y_{1} = a_{1}\sin \left(\omega t - \frac{2\pi x}{\lambda}\right)$ and $y_{2} = a_{2}\cos \left(\omega t - \frac{2\pi x}{\lambda} +\phi\right)$ is
Two long straight wires are set parallel to each other. Each carries a current in the same direction and the separation between them is $2r$. The intensity of the magnetic field mid-way between them is}
In the figure shown below, which of the diodes are forward biased?}
In a step-up transformer the voltage in the primary is $220\mathrm{V}$ and the current is $5\mathrm{A}$. The secondary voltage is found to be $22000\mathrm{V}$. The current in the secondary (neglect losses) is
The light ray is incident at angle of $60^{\circ}$ on a prism of angle $45^{\circ}$. When the light rays falls on the other surface at $90^{\circ}$, the refractive index of the material of prism $\mu$ and the angle of deviation $\delta$ are given by
A plano-convex lens is made of refractive index of 1.6. The radius of curvature of the curved surface is $60~\mathrm{cm}$. The focal length of the lens is
A semiconductor has an electron concentration of $8\times 10^{13} / \mathrm{m}^{3}$ and hole concentration of $5.5\times 10^{12} / \mathrm{m}^{3}$. The semiconductor is
A research satellite of mass $200\mathrm{kg}$ circles the earth in an orbit of average radius $\frac{3R}{2}$, where $R$ is the radius of the earth. Assuming the gravitational pull on a mass of $1\mathrm{kg}$ on the earth's surface to be $10\mathrm{N}$, the pull on the satellite will be
A body of mass $2\mathrm{kg}$ makes an elastic collision with another body at rest and continues to move in the original direction with one-fourth its original speed. The mass of the second body which collides with the first body is
Voltage and current in an AC circuit are given by $V = 5\sin \left(100\pi t - \frac{\pi}{6}\right)$ and $I = 4\sin \left(100\pi t + \frac{\pi}{6}\right)$
A gas at the temperature $250\mathrm{K}$ is contained in a closed vessel. If the gas is heated through $1\mathrm{K}$, then percentage increase in its pressure will be
Two different isotherms representing the relationship between pressure $p$ and volume $V$ at a given temperature of the same ideal gas are shown for masses $m_{1}$ and $m_{2}$ of the gas respectively in the figure given, then}
A, B and C are parallel conductors of equal lengths carrying currents $I$, $I$ and $2I$ respectively. Distance between A and B is $x$. Distance between B and C is also $x$. $F_{1}$ is the force exerted by B on A. $F_{2}$ is the force exerted by C on A. Choose the correct answer.}
A bar magnet is released into a copper ring directly below it. The acceleration of the magnet will be
Energy needed in breaking a drop of radius $R$ into $n$ drops of radii $r$ is given by