List of top Physics Questions asked in MET

The wave number of the shortest wavelength of absorption spectrum of hydrogen atom is_ _ _ _
(Rydberg constant = \(109700\,\mathrm{cm^{-1}}\)).
In the circuit shown, diode has \(20\Omega\) forward resistance. When \(V_i\) increases from \(8V\) to \(12V\), change in current is \(x\,mA\). Find \(x\).
When a lens is cut into two halves along \(XOX'\), then focal length of each half lens:
When \(100\,V\) DC is applied across a solenoid, current is \(1\,A\). When \(100\,V\) AC is applied, current is \(0.5\,A\). Frequency \(=50\,Hz\). Find inductance \(= x\,mH\).
An electric kettle has two coils. When one coil is switched on, it takes 10 min to boil water and when the second coil is switched on it takes 20 min to boil same amount of water. The time taken when both coils are used in parallel is \(n\) seconds. Find \(n\).
In the following circuit diagram, potential difference across \(4\mu F\) capacitor is:
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An electric dipole shown in the figure. Work done to move a charge particle of \(1\mu C\) from point Q to P is \(x \times 10^{-7} J\), then the value of \(x\) is:
Fundamental frequency of a sonometer wire is \(n\). If the tension is made 3 times and length and diameter are also increased 3 times, what is the new frequency?
Two pendulums of time periods \(3\,s\) and \(7\,s\), respectively, start oscillating simultaneously from opposite extreme positions. After how much time will they be in same phase?
The stress versus strain graphs for wires of two materials A and B are as shown. If \(Y_A\) and \(Y_B\) are the Young's moduli of the materials, then:
A particle is projected with speed \(4\,km/s\). Find maximum height (in km). Radius of earth \(=6400\,km\), \(g=9.8\,m/s^2\).
A car turns on a road of radius \(300\,m\). Coefficient of friction = 0.3. Find maximum speed. (Take \(g=10\,m/s^2\))
Two points move in the same straight line starting at the same moment from the same point. One moves with velocity \(u\) and the other with acceleration \(f\). The greatest distance between them is:
If \(E =\) energy, \(G =\) gravitational constant, \(I =\) impulse and \(M =\) mass, then dimensions of \( \frac{EI}{GM^2} \) are same as that of:
Ionisation potential of hydrogen atom is \(13.6 \, \text{eV}\). Hydrogen atoms in the ground state are excited by monochromatic radiation of photon energy \(12.1 \, \text{eV}\). The spectral lines emitted by hydrogen atoms according to Bohr's theory will be:
In Young's double slit experiment, if the source of light changes from orange to blue, then
A ray falls on a prism \(ABC\) (AB = BC) and travels as shown in the figure. The minimum refractive index of the prism material should be:
A vertical disc of diameter 10 cm makes 20 revolutions per second about a horizontal axis through its centre. A uniform magnetic field \(10^{-1}\) T acts perpendicular to the plane. If potential difference between centre and rim is \(\frac{\pi}{x} \times 10^{-p}\) Volt, find \(x/p\).
The resistance of a wire at \(20^\circ C\) is \(20\Omega\) and at \(500^\circ C\) is \(60\Omega\). At which temperature its resistance will be \(25\Omega\)?
A charged capacitor when filled with a dielectric \(K = 3\) has charge \(Q_0\), voltage \(V_0\) and field \(E_0\). If the dielectric is replaced with another one having \(K = 9\), the new values of charge, voltage and field will be respectively:
A function of time is represented as follows \( \sin \omega t + \cos 2\omega t + \sin 4\omega t \). The motion represented by it is:
Two steel wires having same length are suspended from a ceiling under the same load. If the ratio of their energy stored per unit volume is \(1:4\), then the ratio of their diameters is found to be \(\sqrt{k} : 1\). Find the value of \(k\).
The acceleration due to gravity becomes \( \frac{g}{2} \) at a height equal to:
A disc of mass 5 kg and radius 50 cm rolls on the ground at 10 m/s. Find the kinetic energy.
A force \( F = (2 + x) \) acts on a particle in x-direction, where \(F\) is in newton and \(x\) in metre. The work done during displacement from \(x=1\) m to \(x=2\) m is: