List of top Physics Questions asked in MHT CET

A long solenoid has 1500 turns. When a current of 3.5 A flows through it, the magnetic flux linked with each turn of solenoid is $2.8 \times 10^{-3}$ weber. The self-inductance of solenoid is
A uniform circular disc of mass $12 \text{ kg}$ is held by two identical springs. When the disc is slightly pressed down and released, it executes S.H.M. of period $2 \text{ second}$. The force constant of each spring is (Take $\pi^2 = 10$)}
Sound waves of frequency $600\ \text{Hz}$ fall normally on a perfectly reflecting wall. The shortest distance from the wall at which all particles will have maximum amplitude of vibration is (speed of sound $=300\ \text{ms}^{-1}$)}
A charge $17.7 \times 10^{-4}\text{ C}$ is distributed uniformly over a large sheet of area $200 \text{ m}^2$. The electric field intensity at a distance $20 \text{ cm}$ from it in air will be $[\epsilon_0 = 8.85 \times 10^{-12}\text{ C}^2/\text{Nm}^2]$}
Calculate the frequency if wavelength is 750 nm.
If a body cools from $80^{\circ}\text{C}$ to $50^{\circ}\text{C}$ in the room temperature of $25^{\circ}\text{C}$ in 30 minutes, then the temperature of the body after 1 hour is
What is the SI unit of rate of diffusion?

Find the surface tension at critical velocity?

If mutual inductance M=3H, L1=4H, L2=9H, will the coupling coefficient be equal?

Find the Current unit conversion from SI to CGS.
At the pure inductive stage, find emax.
Find the height of a conical pendulum if the time period is given.
Find the change in the charge carriers of a p-n junction diode if its temperature is increased?
If at depth ‘\(d\)’ the gravitational force acting on a particle is 300 N, then what is the force on a particle at depth ‘\(\frac d2\)’ ?

A liquid drop having surface energy ‘E’ is spread into 216 droplets of the same size. The final surface energy of the droplets is __.

Two spheres ‘S1’ and ‘S2’ have same radii but temperatures are ‘T1’ and ‘T2’ respectively. Their emissive power is same and emissivity is in the ratio 1 : 4. Then the ratio ‘T1’ to‘T2’ is

Two long parallel wires separated by distance ‘d’ carry currents I1 and I2 in the same direction. They exert a force F on each other. Now the current in one of the wire is increased to three times and its direction is made opposite. The distance between the wires is doubled. The magnitude of force between them is

In LCR series resonance circuit, choose the wrong statement

A light wave of wavelength ‘λ’ 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 maximum is equal to the width of the slit, then the distance D is

In a p-type semiconductor

A diffraction pattern is obtained by making blue light incident on a narrow slit. If blue light is replaced by red light then

A transistor is used as a common emitter amplifier with a load resistance 2 kΩ. The input resistance is 150 Ω. Base current is changed by 20 μA which results in a change in collector current by 1.5 mA. The voltage gain of the amplifier is

The work done by a force on body of mass 5 kg to accelerate it in the direction of force from rest to 20 m/s2 in 10 second is

A satellite of mass ‘m’ is revolving around the earth of mass ‘M’ in an orbit of radius ‘r’. The angular momentum of the satellite about the centre of orbit will be

Two point charges q1 and q2 are ‘l’ distance apart. If one of the charges is doubled and distance between them is halved, the magnitude of force becomes n times, where n is