List of top Questions asked in MET- 2017

The photoelectric cut-off voltage in an experiment was found to be 1.5 V. The work function for the material used in the experiment was 4.2 eV. The maximum kinetic energy of the photoelectrons emitted was
When the inputs of a two input logic gate are 0 and 0, the output is 1. When the inputs are 1 and 0 the output is 0. The logic gate is of the type
A sinusoidal voltage of peak value 300 V and an angular frequency \(\omega = 400\) rad/s is applied to a series \(L\)-\(C\)-\(R\) circuit in which \(R = 3\ \Omega\), \(L = 20\) mH and \(C = 625\ \mu\)F. The peak current in the circuit is
For \( f \)-orbital the values of \( m \) are
Two equal charges \(q\) are kept fixed at \(-a\) and \(+a\) along the \(x\)-axis. A particle of mass \(m\) and charge \(\dfrac{q}{2}\) is brought to the origin and given a small displacement along the \(x\)-axis, then
Two equal point charges, \(Q = +\sqrt{2}\ \mu\)C are placed at each of the two opposite corners of a square and equal point charges \(q\) at each of the other two corners. The value of \(q\), so that the resultant force on \(Q\) is zero is
Two capacitors, one 4 pF and the other 6 pF, connected in parallel, are charged by a 100 V battery. The energy stored in the capacitors is
The linear momentum is increased by 50%, the kinetic energy will increase by
A voltmeter of resistance 998 \(\Omega\) is connected across a cell of emf 2 V and internal resistance 2\(\Omega\). The potential difference across the voltmeter is
In the adjoining circuit, the resistances are given in ohm, and \(X\) and \(Y\) are unknown resistances. The current through the 10 \(\Omega\) resistance is 3A while that through the resistance \(X\) is 1A. No current passes through the galvanometer. The values of the unknown resistances \(X\) and \(Y\) are respectively}
For a colour of light the wavelength for air is 6000 \AA\ and in water the wavelength is 4500 \AA. Then the speed of light in water will be
When an equilateral prism of refractive index \(\sqrt{3}\) produces minimum deviation the angle of incidence at the first face must be
The ratio of the wavelength of first line of Balmer series to the first line of Lyman series is
A \(p\)-\(n\) junction is designed to withstand current up to a maximum in 10 mA. A resistor \(R = 200\ \Omega\) is connected in series with it. When forward biased the diode has a potential drop of 0.5 V. The maximum voltage of the battery required to forward bias the diode is
What is the Boolean equation for a NAND gate with inputs \(A\) and \(B\)?}
A geo-stationary satellite is orbiting the earth at height of 6\(R\) above the surface of the earth, \(R\) being the radius of the earth. The time period of another satellite at a height of 2.5 \(R\) from the surface of the earth is
A thin rod of length \(\dfrac{f}{3}\) is placed along the optic axis of a concave mirror of focal length \(f\) such that its image is real and elongated and just touches the rod, the magnification is
The angle of minimum deviation for a prism of angle \(A\) is \(180 - 2A\). The refractive index is
Two coherent sources of intensity ratio 9:4 produce interference. What is the ratio between maxima and minima in the interference pattern produced?
An electron at rest is accelerated through a potential difference of 200 V. If the electron acquires a velocity of \(8.4 \times 10^8\) cm/s, its \(e/m\) ratio is
Three 2 \(\Omega\) resistors are connected to form a triangle. The resistance between any two corners is
A cell of emf \(E\) is connected across a resistance \(R\). The potential difference between the terminals of the cell is found to be \(V\). The internal resistance of the cell must be
A charged particle of mass \(m\) and charge \(q\) is released from rest in an electric field of magnitude \(E\). The kinetic energy of the particle after time \(t\) second is
The electric potential is +100 V at a distance of 10 cm from a point charge \(q\). Then, \(q\) is equal to
A force of 20 N acts on a body of mass 2 kg initially at rest. Find the work done in 2 s.