List of top Questions asked in MET

A comb is run through wet hair on a rainy day, then:

The displacement-time graph of a particle moving along a straight line is shown in the figure. The acceleration-time graph of this particle is:

The maximum kinetic energy of photoelectrons coming out of a metal surface is \(10 \, \text{eV}\). The minimum voltage required to stop the emission of electrons from this metal surface is:

Thermal radiation exist in which part of electromagnetic spectrum?

A rod of length \(L\) is composed of two equal parts: half wood (mass \(m_w\)) and half brass (mass \(m_b\)). The moment of inertia about an axis through its centre and perpendicular to the rod is:

A particle, doing simple harmonic motion, at a distance \(3\,cm\) from mean position has acceleration \(12\,cm/s^2\). What is its time period?

A step up transformer has turn ratio \(10:1\). A cell of emf \(2\,V\) is fed to the primary, then the secondary voltage developed is:

A man at a distance \(11\,km\) from two pillars wants to see them separately. What will be the approximate distance between the pillars?

Dimensions of Stefan’s constant is:

Time period of oscillation of mass \(m\) suspended from a spring is \(T\). What is the time period when the spring is cut in half and the same mass is suspended from one of the halves?

An electric current of \(2\,A\) passes through a wire of resistance \(25\,\Omega\). How much heat will be generated in \(1\,min\)?

A mass \( m \) hanging from a spring is doing simple harmonic motion with frequency \( f \). If the mass is increased by 4 times, then frequency will be:

Internal energy of a gas remains unchanged in:
I. an isothermal process
II. an adiabatic process
III. a reversible process
IV. a cyclic process

An electric charge in uniform motion produces:

If \( \lambda \) is the incident wavelength and \( \lambda_0 \) is the threshold wavelength for a metal surface, photoelectric effect takes place only if:

The mass number of an atom is 15 and its atomic number is 7. Now, this atom absorbs an \( \alpha \)-particle and emits a proton. What will be the mass number of changed atom?

What is the direction of the electric field at the centre \(O\) of the square in the figure shown below? Given that, \( q = 10\,\text{nC} \) and the side of the square is \(5\,\text{cm}\).

Which equation is valid for adiabatic process?

Which of the following relation is correct? (\(v_{\mathrm{rms}}\): root mean square velocity, \(\bar{v}\): mean velocity and \(v_{\mathrm{mp}}\): most probable velocity)

The effect of reverse bias in a junction diode on its potential barrier is:

During an experiment, an ideal gas is found to obey an additional law \(Vp^2 = \text{constant}\). The gas is initially at temperature \(T\) and volume \(V\). The temperature of the gas when it expands to a volume \(2V\) is:

In which of the following process, convection does not take place primarily?

The horizontal component of earth’s magnetic field at a place is \(0.4 \times 10^{-4}\,T\). If the angle of dip is \(45^\circ\), the value of total intensity is:

Two coils have mutual inductance of \(1.5\,H\). If current in primary coil is suddenly raised to \(5\,A\) in one millisecond, the induced emf in the secondary coil is:

The formula for magnetic field of a certain component is given by \[ B = \frac{\mu_0 Ni}{2\pi r} \] where, \(N\) = total number of turns, \(i\) = current, \(r\) = radius. The component is: