List of top Physics Questions asked in MHT CET

An iron rod is placed parallel to the magnetic field of intensity 2000 \( A/m \). The magnetic flux through the rod is \( 6 \times 10^{-4} \, Wb \) and its cross-sectional area is \( 3 \, cm^2 \). The magnetic permeability of the rod in \( \frac{Wb}{A \cdot m} \) is

In the equation \( P = \frac{C+S}{D} \), \( P \) and \( S \) represent pressure and distance respectively. The dimensions of \( \frac{P}{D} \) are

The motion of a rocket in upward direction with high speed is based on the principle of conservation of

The 3rd overtone of a closed organ pipe is in unison with 3rd overtone of an open pipe. The ratio of the length of the closed pipe to the length of open pipe is

A progressive wave of frequency \( 50\,\text{Hz} \) is travelling with velocity \( 350\,\text{m s}^{-1} \) through a medium. The change in phase at a given point in a time interval of \( 0.01\,\text{s} \) is

Four capacitors of equal capacity have an equivalent capacitance \(C_1\) when connected in series and an equivalent capacitance \(C_2\) when connected in parallel. The ratio \(\dfrac{C_2}{C_1}\) is

In series LCR circuit, resistance is 18 \( \Omega \) and impedance is 33 \( \Omega \). An r.m.s. voltage of 220 V is applied across the circuit. The true power consumed in a.c. circuit is

A light wave of wavelength \( \lambda \) is incident on a slit of width \( d \). The resulting diffraction pattern is observed on a screen at a distance \( D \). If linear width of the principal maxima is equal to the width of the slit, then the distance \( D \) is

The third overtone of a closed pipe is in unison with the second overtone of an open pipe. Hence the ratio of the length of the closed pipe to that of the open pipe is:

Two wires 'A' and 'B' of equal lengths are connected in left and right gaps of a meter bridge, respectively. The null point is obtained at 40 cm from the left end. Diameters of the wires 'A' and 'B' are in the ratio 3:1, the ratio of specific resistance of 'A' to that of 'B' is

Using Bohr’s quantization condition, what is the rotational energy in the second orbit for a diatomic molecule? (I = moment of inertia of diatomic molecule, \( h \) = Planck’s constant)

If \( \mathbf{A} = \hat{i} + 12 \hat{j} + \hat{k} \) and \( \mathbf{B} = 2\hat{i} - a\hat{j} + \hat{k} \) are perpendicular to each other, then what will be the value of \( a \)?

When a ray of light is refracted from one medium to another, then the wavelength changes from 6000 Å to 4000 Å. The critical angle for the interface will be:

On mixing a highly soluble impurity in water, the surface tension \(T\) and angle of contact \(\theta\)

The moment of inertia of a ring about an axis passing through its centre and perpendicular to its plane is \(I\). It is rotating with angular velocity \(\omega\). Another identical ring is gently placed on it so that their centres coincide. If both the rings rotate about the same axis, then loss in kinetic energy is

Choose the correct statement. In conductors

Binding energy of a revolving satellite at height \(h\) is \(3.5\times10^8\,\text{J}\). Its potential energy is

A ball falls in the downward direction from a height \( h \) with initial velocity \( V \). It collides with the ground, loses \( \frac{3}{4} \)th of energy and comes back to the same height. The initial velocity \( V \) is (g = acceleration due to gravity)

In meter bridge experiment, null point was obtained at a distance \( f \) from left end. The values of resistances in the left and right gaps are doubled and then interchanged. The new position of null point is

A thin metal rod of mass \(M\) and length \(L\) is cut into 4 equal parts by cutting it perpendicular to its length. If moment of inertia of the rod about an axis passing through its centre and perpendicular to its axis is \(I\), then moment of inertia of each part about the similar axis is

For athermanous substances, coefficient of transmission is

A motorcyclist rides in a horizontal circle about a central vertical axis inside a cylindrical chamber of radius \(r\). If the coefficient of friction between the tyres and the inner surface of the chamber is \(\mu\), the minimum speed of motorcyclist to prevent him from skidding is (\(g\) = acceleration due to gravity)

In meter-bridge experiment a resistance of \(18\,\Omega\) is connected in left gap and unknown resistance \(R\) is connected in right gap. The null point is obtained at \(\ell_1\) from left end. If unknown resistance is replaced by \(\left(\frac{R}{3}\right)\Omega\), the null point is obtained at \(1.5\ell_1\). The unknown resistance is

Two satellites \(A\) and \(B\) of same mass are revolving round the earth at height \(2R\) and \(3R\) respectively above the surface of the earth. The ratio of kinetic energies of \(A\) to \(B\) will be

For a gas \(\dfrac{R}{C_v} = 0.67\). This gas is made up of molecules which are