List of top Physics Questions asked in MHT CET

A particle of mass ' \(m\) ' is executing S.H.M. about the origin on \(x\)-axis with frequency \(\sqrt{\frac{ka}{\pi m}}\), where ' \(k\) ' is a constant and ' \(a\) ' is the amplitude of S.H.M. If ' \(x\) ' is a displacement of a particle, at time ' \(t\) ', potential energy of the particle will be

For a given medium, the speed of light and the polarising angle are ' \(v\) ' and ' \(i_p\) ' respectively, then (\(c\) = speed of light in vacuum)

A hollow charged metal sphere has a radius ' \(r\) '. If the potential difference between its surface and a point at a distance ' \(3r\) ' from the centre is ' \(v\) ', then the electric field intensity at a distance ' \(3r\) ' is

Two stars 'A' and 'B' radiate maximum energy at \(5200\text{ \AA}\) and \(6500\text{ \AA}\) respectively. Then the ratio of absolute temperatures of stars ' A ' and ' B ' is

A pipe closed at one end vibrating in fifth overtone is in unison with open pipe vibrating in its fifth overtone. The ratio of \(l_c : l_o\) is [\(l_c = \text{vibrating length of closed pipe}, l_o = \text{vibrating length of open pipe}\)]

When a ray of light is refracted from one medium to another, then the wavelength changes from \(6000\text{ \AA}\) to \(4000\text{ \AA}\). The critical angle for the interface will be

The resistance of a coil for d.c. is \(5\Omega\). In a.c., the resistance will

A thin rod of length ' $4L$ ' and mass ' $4m$ ' is bent as shown. Find the moment of inertia about an axis through $O$ and perpendicular to the plane.

In between the plates of parallel plate capacitor of plate separation '$d$' a dielectric plate of thickness '$t$' is inserted. The capacitance becomes one-third of the original capacity without dielectric. The dielectric constant of the plate is

Four masses of \(1\text{ kg}, 2\text{ kg}, 3\text{ kg}\) and \(4\text{ kg}\) are kept at co-ordinates \((0, 0)\text{m, (0, 1)\text{m}\) and \((1, 0)\text{m}\) respectively. Using the co-ordinates of centre of mass its position vector is}

Two different coils have self - inductance \(L_1 = 9\text{ mH}\) and \(L_2 = 3\text{ mH}\). The current in first coil is increased at a constant rate. The current in the second coil is also increased at the same constant rate. At certain instant of time, the power given to the two coils is same. At that time, there was current and induced voltage in the two coils. At the same instant, the ratio of the energy stored in the first coil to that in second coil is

Water is flowing through a horizontal pipe in a streamline flow. At the narrowest part of the pipe

Two charges \( q_1 = 2 \, \mu \mathrm{C} \) and \( q_2 = -3 \, \mu \mathrm{C} \) are placed 10 cm apart in a vacuum. What is the magnitude and direction of the force between them?

Three tuning forks A, B and C have respective frequencies \( n_1, n_2 \) and \( n_3 \) related as \( n_1 = 1.03n_2 \) and \( n_3 = 0.99n_2 \). When A and C are sounded together 4 beats are heard per second. The frequencies of fork B and C are respectively

Rods 'A', 'B' and 'C' are made of a paramagnetic, a ferromagnetic and a diamagnetic substance respectively. A magnet is brought close to them, it will

Water rises up to height ' x ' in a capillary tube immersed vertically in water. When the whole arrangement is taken to a depth 'd' in a mine, the water level rises height ' Y '. If ' R ' is the radius of earth then the ratio (Y x) is

Pressure of the gas remaining same, the temperature at which r.m.s. speed of the gas molecules is double its value at \( 27^\circ\text{C} \) is

By increasing the temperature, the electrical conductivity of a conductor and a semiconductor,

If \( R_1 \) and \( R_2 \) are the radii of the atomic nuclei of mass numbers $27$ and $125$ respectively, then the ratio \( R_2 : R_1 \) is

In a single slit diffraction experiment, slit of width 'a' and incident light of wavelength \( 5600\,\text{\AA} \), the first minimum is observed at angle \( 30^\circ \). The first secondary maximum is observed at angle \( (\sin 30^\circ = 0.5) \)

The potentials at points A and B are \( V_A \) and \( V_B \) respectively for the charges \( +q \) and \( -q \) placed at distances ' x ' each from points A and B as shown in figure. The distance between points A and B is ' y '. The net potential (\( V_A - V_B \)) is proportional to

The wrong statement out of the following statements is

A circular coil carrying current ' I ' has radius ' R ' and magnetic field at the centre is ' B '. At what distance from the centre along the axis of the same coil, the magnetic field will be \( \frac{B}{8} \) ?

A galvanometer of resistance ' G ' is converted into an ammeter of resistance \( \frac{G}{40} \), by connecting a shunt ' S ' to it. The part of main current passing through the galvanometer is

A satellite of mass ' m ' is orbiting the earth of radius ' R ' at height ' h ' from the surface of earth. The total energy of the satellite is ( g = acceleration due to gravity at the earth's surface)