List of top Questions asked in MHT CET- 2025

A wire of length $L$ carries current $I$ along x - axis. A magnetic field $\vec{B} = B_0(\hat{i} - \hat{j} - \hat{k})\text{T}$ acts on the wire. The magnitude of magnetic force acting on the wire is

When source of sound and observer both are moving towards each other, the observer will hear}

A concave lens (refractive index $= 1.5$) has both surfaces of same radius of curvature R . If it is immersed in a liquid of refractive index 1.75 it will act as a}

Two similar wires of equal lengths are bent in the form of a square and a circular loop. They are suspended in a uniform magnetic field and same current is passed through them. Torque experienced by}

Water rises in a capillary tube of radius r upto height h . The mass of water in a capillary is m. The mass of water that will rise in capillary of radius $\frac{r}{5}$ will be}

In a single slit diffraction pattern, the distance between the plane of the slit and screen is 1.3 m . The width of the slit is 0.65 mm and the second maximum is formed at the distance of 2.6 mm from the centre of the screen. The wavelength of light used is

A particle of charge \( q \) moves with a velocity \( \vec{v} = a\hat{i} \) in a magnetic field \( \vec{B} = b\hat{j} + c\hat{k} \), where ' a ', ' b ' and ' c ' are constants. The magnitude of force experienced by particle is

The excess pressure inside a soap bubble is 1.5 times the excess pressure inside a second soap bubble. The volume of the second bubble is ' \( x \) ' times the volume of the first bubble. The value of ' \( x \) ' is

In a mirror or pipe closed at one end, air column is vibrating in its second overtone. The column has}

The two ends of a rod of length ' \( x \) ' and uniform cross-sectional area ' \( A \) ' are kept at temperatures ' \( T_1 \) ' and ' \( T_2 \) ' respectively (\( T_1>T_2 \)). If the rate of heat transfer is ' \( Q/t \) ', through the rod in steady state, then the coefficient of thermal conductivity ' \( K \) ' is

The fundamental frequency of a sonometer wire is 50 Hz for some length and tension. If the length is increased by 25% by keeping tension same then frequency change of second harmonic is

The graph given below represents I-V characteristics of zener diode. The part of the characteristics curve that is most relevant for its operation as a voltage regulator is

The magnitude of gravitational potential energy of a body at a distance ' \( R \) ' from the centre of the earth is ' \( E \) '. Its weight at a distance ' \( 1.5 R \) ' from the centre of the earth is

The energy needed for breaking a liquid drop of radius ' \( R \) ' into ' \( n \) ' droplets each of radius ' \( r \) ' is [\( T = \) surface tension of the liquid]}

Earth is assumed to be a charged conducting sphere having volume V and surface area A. The capacitance of the earth in free space is (\( \varepsilon_0 = \) permittivity of free space)}

A particle performing linear S.H.M. has period 8 seconds. At time t = 0, it is in the mean position. The ratio of the distances travelled by the particle in the \( 1^{\text{st}} \) and \( 2^{\text{nd}} \) second is (\( \cos 45^\circ = 1/\sqrt{2} \))}

In the given circuit, current flowing through the circuit is

The de-Broglie wavelength of a neutron at \( 27^\circ\text{C} \) is ' \( \lambda_0 \) '. What will be its wavelength at \( 927^\circ\text{C} \)?

When cell of e.m.f. ' \( E_1 \) ' is connected to potentiometer wire, the balancing length is ' \( l_1 \) '. Another cell of e.m.f. ' \( E_2 \) ' (\( E_1>E_2 \)) is connected so that two cells oppose each other, the balancing length is ' \( l_2 \) '. The ratio \( E_1 : E_2 \) is

A graph of magnetic flux (\( \phi \)) versus current (\( I \)) is shown for four inductors P, Q, R, S. The largest value of self-inductance is for inductor}

Initially \( n \) identical capacitors are joined in parallel and are charged to potential V. Now they are separated and joined in series. Then}

Photoelectric emission takes place from a certain metal at threshold frequency \( \nu \). If the radiation of frequency \( 4\nu \) is incident on the metal plate, the maximum velocity of the emitted photoelectrons will be (\( m = \) mass of photoelectron, \( h = \) Planck's constant)}

A solid cylinder of mass ' \( M \) ' and radius ' \( R \) ' is rotating about its geometrical axis. A solid sphere of same mass and same radius is also rotating about its diameter with an angular speed half that of the cylinder. The ratio of the kinetic energy of rotation of the sphere to that of the cylinder will be}

When the electron orbiting in hydrogen atom goes from one orbit to another orbit (principal quantum number \( = n \)), the de-Broglie wavelength (\( \lambda \)) associated with it is related to \( n \) as}

A constant force acts on two different masses independently and produces accelerations \( A_1 \) and \( A_2 \). When the same force acts on their combined mass, the acceleration produced is