List of top Physics Questions asked in MHT CET

Water flows through a horizontal tube as shown. If the difference of heights of water column in the vertical tubes is \(h=2\ \text{cm}\), and the areas of cross section at A and B are \(4\ \text{cm}^{2}\) and \(2\ \text{cm}^{2}\) respectively, the difference in pressure that is \((P_{A}-P_{B})\) is {\(v_{A}=\) velocity of water at point A, \(v_{B}=\) velocity of water at point B, density of water \(\rho =1\ \text{g/cm}^{3}\)}
Two particles are separated by a horizontal distance \({}'x'\) as shown. They are projected at the same time as shown with different initial speeds. The time after which the horizontal distance between them becomes zero is
\(\left\{\cos 30^{\circ }=\frac{\sqrt{3}}{2},\,\cos 60^{\circ }=\frac{1}{2}\right\}\)
A ray of light passes through four transparent media with refractive indices \(\mu _{1}\), \(\mu _{2}\), \(\mu _{3}\) and \(\mu _{4}\) as shown in the figure. The surfaces of all media are parallel. If the emergent ray CD is parallel to the incident ray AB, then
A thin semicircular conducting ring (PQR) of radius r is falling with its plane vertical in a horizontal magnetic field B as shown in the figure. The potential difference developed across the ring when its speed is v, is
\(\{\sin (90)^{\circ }=1\}\)
If the current 'i' is passing through the wire, it has a shape as shown in the figure. The radius of the curved part is R and the linear part is assumed to be very long. The magnetic induction of the field at the point O, is
(\(\mu _{0}=\)permeability of free space)
Three charges Q, \(+q\) and \(+q\) are placed at the vertices of the right angle triangle (isosceles triangle) as shown. The net electrostatic energy of the configuration is zero, if Q is equal to [a \(=\) length of two equal sides of a triangle]
A solid cylinder of length \(l\) and cross-sectional area A is immersed such that it floats with its axis vertical at the liquid-liquid interface with length \(\frac{l}{3}\) in the denser liquid as shown in the figure. The lower density liquid is open to the atmosphere, having pressure \(P_{0}\). The density of a solid cylinder is
The kinetic energies of planets in an elliptical orbit about the Sun, at positions A, B and C are \(K_{A}\), \(K_{B}\) and \(K_{C}\), respectively. AC is the major axis and SB is perpendicular to AC at the position of the Sun as shown in figure. Then
From a uniform circular disc of mass M and radius R, part AOC is removed as shown in the figure. The M.I. of the remaining portion of the disc about an axis passing through the centre and perpendicular to the plane of the disc is
The energy levels of certain atom are represented in the following figure. During the transition from 2E to E level, a photon of wavelength \(\lambda\) is emitted. The wavelength of photon produced during transition from \(\frac{4E}{3}\) level to E will be
The variation of induced emf (E) with time (t) in a coil if a short bar magnet is moved along its axis with a constant velocity is best represented as \(\{\)North pole is situated at left end of the bar magnet and South pole is situated at right end of the bar magnet\(\}\)
A thin semicircular conducting ring of radius R is falling with its plane vertical in a horizontal magnetic induction B. At the position MNQ the speed of ring is V and emf developed across the ring is
The magnitude of the magnetic field at point O (centre of the arc) with radius R, in the following case is
(\(\mu _{0}\) = permeability of free space, I = current and R is the radius of circular arc)
A parallel plate capacitor has a dielectric slab of dielectric constant K between its plates that covers \(1/3\) of the area of its plates as shown in the figure. The total capacitance of the capacitor is C while that of the portion with dielectric in between is \(C_{1}\). When the capacitor is charged, the plate area covered by the dielectric gets charge \(Q_{1}\) and the rest of the area gets charge \(Q_{2}\). The electric field in the dielectric is \(E_{1}\) and that in the other portion is \(E_{2}\). Choose the correct option.
Consider a thin spherical shell of radius R with its centre at the origin, carrying uniform positive surface charge density. The variation of the magnitude of the electric field \(E(r)\) and electric potential \(V(r)\) with the distance r from the centre, is best represented by which graph?

Continuous curve stands for intensity. Dotted curve stands for potential.
One mole of an ideal gas in initial state A undergoes a cyclic process ABCA, as shown in the figure. Its pressure at A is \(P_{0}\). Choose the correct option from the following.
A homogeneous solid cylinder of length L and cross-sectional area \(A/5\) is immersed such that it floats with its axis vertical at the liquid-liquid interface with length \(L/4\) in the denser liquid as shown in the figure. The lower density liquid is open to atmosphere having pressure \(p_{0}\). Then, density of the solid cylinder is
A mass m supported by massless string wound around a uniform hollow cylinder of mass m and radius R. If the string does not slip on the cylinder, with what acceleration will the mass fall on release?
\(\{g\) = acceleration due to gravity\(\}\)
The truth table for the given circuit is
In Wheatstone bridge, resistance P is formed by a parallel combination of \(p_{1}\) and \(p_{2}\). The Q resistance is formed by a parallel combination of \(q_{1}\) and \(q_{2}\). The remaining two resistances are R and S respectively, and in the balanced condition, \(\frac{R}{S}\) is
The air capacitor has a capacitance of \(2\) \(\mu\)F. Now the space between two plates of capacitor is filled with two dielectrics as shown in the figure. The capacitance of the capacitor is (in \(\mu\)F) {'d' is the distance between two plates of the capacitor}
A very thin, uniform disc is made by removing a small disc of diameter \(2R\) from a bigger (thin, uniform) disc of uniform mass density, mass \(M\), and radius \(2R\), as shown in the figure. The M.I. of this remaining part about an axis passing through point O and perpendicular to the plane of the figure is
In the following combination of logic gates, the outputs (y,z) are respectively.
The equivalent resistance of the following circuit is nearly
The displacement time (x-t) graph of a particle performing simple harmonic motion is shown in the figure. The acceleration of the particle at \(t=1\) s is