List of top Physics Questions asked in MHT CET

A solid sphere of mass 5 kg and a disc of mass 4 kg have the same radius. The ratio of moment of inertia of the sphere about its tangent to the moment of inertia of the disc about a tangent in its plane will be \(x:y\). The value of \(x\) and \(y\) respectively is

A small metal sphere is falling through a viscous liquid. The variation of velocity (\(V\)) with time (\(t\)) is shown correctly in graph

Two stars A and B radiate maximum energy at wavelength \(3.9\times 10^{-7}\) m and \(5.2\times 10^{-7}\) m respectively. The ratio of the temperature of star A to that of star B will be

If two vectors \(\overset{⃗}{A} = 4\hat{i}+n\hat{j}+2\hat{k}\) and \(\overset{⃗}{B} = 2\hat{i}+2\hat{j}-\hat{k}\) are mutually perpendicular to each other then value of 'n' is

Two spheres are projected at angles \(30^{\circ}\) and \(45^{\circ}\) with the horizontal. The maximum height reached by both is same. The ratio of their initial velocities is, \((sin45^{\circ} = \frac{1}{\sqrt{2}},sin30^{\circ} = 0.5)\)

A particle completes 2 revolutions in a circular path of radius 3 cm. The angular displacement of the particle will be (in radian)

A car is travelling at 40 m/s on a circular path of radius 40 m. It is increasing its speed at the rate of \(2 \text{m/s}^2\). Its net acceleration is (in \(\text{m/s}^2\)) nearly

Three blocks of different masses connected with inextensible string are pulled by a force \(F\) on a frictionless surface as shown in the figure. The ratio of tensions \(T_1\) to \(T_2\) is

A physical quantity \(x\) is related as \(x = \sqrt{a} b^2c^3d^{-4}\). Relative errors in the quantities \(a\), \(b\), \(c\) and \(d\) are 2%, 1%, 3% and 4% respectively. Relative error in \(x\) will be

What is the SI unit of luminous intensity ?

In the band structure of n-type semiconductor , the free electrons donated by impurity atoms occupy energy levels in

The output Y of the following digital logic circuit will be '1' (one) for the inputs

In a common emitter transistor amplifier, AC current gain is \(65\), the load resistance is \(5400\,\Omega\) and input resistance of the transistor is \(450\,\Omega\). The voltage gain is

The proton and \(α\) - particle are accelerated through same potential difference. Then the ratio of the de-Broglie wavelength of proton and \(α\) - particle is (mass of \(α\)-particle is \(4\) times mass of proton, charge of \(α\)-particle is \(2\) times charge of proton)

The angular momentum of an electron in Bohr's hydrogen atom having energy \((-0.544)\) eV is
(\(h\) = Planck's constant)

An electron in the hydrogen atom jumps from \(n^{th}\) energy state to the ground state. The wavelength so emitted illuminates a photosensitive material having work function \(2.65\) eV. If the maximum kinetic energy of the emitted photoelectrons is \(10.1\) eV, then the value of '\(n\)' is

Two identical photocathodes receive light of frequencies \(n_1\) and \(n_2\). If the velocities of the emitted photoelectrons of mass m are \(V_1\) and \(V_2\) respectively, then (\(h\) = Planck's constant)

The prism has refracting angle A. The second refracting surface of the prism is silvered. Light ray falling on first refracting surface with angle of incidence \(2A\), reaches the second surface and returns back through same path due to reflection at the silvered surface. The refractive index of the material of prism is

In an interference experiment, the \(m^{th}\) bright fringe for light of wavelength \(λ_1\) coincides with the \(n^{th}\) dark fringe for light of wavelength \(λ_2\) . The ratio \(\frac{λ_2}{λ_1}\) is

In a biprism experiment, the distance between \(4^{th}\) and \(13^{th}\) bright band on the same side is '\(y\)' when light of wavelength \(6000\) Å is used. For a light of wavelength '\(λ\)' the distance between \(6^{th}\) and \(16^{th}\) bright band on the same side is again '\(y\)'. The value of '\(λ\)' in Å units is

When an inductance '\(L\)' and resistor '\(R\)' are connected in series to \(25\)V, \(50\) Hz supply, a current of \(0.5\) A flows in the circuit. The current lags behind in phase from applied voltage by \((\frac{π}{3})\) radian. The value of R is \((cos60^{\circ} = \frac{1}{2})\)

In the circuit shown charge q varies with time t as \(q = t^2-5\), where q is in coulomb and t is in second. At time \(t = 3\) second, voltage \(V_{AB}\) in volt will be

Light of wavelength \(580\) nm is incident normally on a slit of width '\(a\)'. The distance between slit and screen is \(2.5\) m and the distance of the second order maximum from the centre of the screen is \(14.5\) mm in a diffraction pattern. The value of '\(a\)' is

A square loop ABCD of side L carrying a current \(I_1\) is placed at a distance \((L/3)\) from a conductor coplaner with a straight conductor XY carrying current \(I_2\) as shown in figure. The net force on the loop will be (\(μ_0\) = magnetic permeability)

A coil of effective area \(3\) m\(^2\) is placed at right angles to a magnetic field of induction \(0.05\) Wb/m\(^2\). If the field is decreased to \(20\%\) of its original value in \(10\) second, the e.m.f. induced in the coil will be