List of top Questions asked in MHT CET

Two strings with mass per unit length of $25 \, g \, cm^{-1}$ and $9 \, gcm^{-1}$ are joined together in series. The reflection coefficient for the vibration waves are
Newton's law of cooling holds good only, if the temperature difference between the body and the surroundings is
A pendulum bob carriers a negative charge - A positive charge +q is held at the point of support. Then, the time period of the bob is
The increase in pressure required to decrease the 200 L volume of a liquid by 0.004% (in kPa) is (Bulk modulus of the liquid = 2100 MPa)
Two short magnets have equal pole strengths but one is twice as long as the other. The shorter magnet is placed 20 cm in tan A position from the compass needle. The longer magnet must be placed on the other side of the magnetometer for no deflection at a distance equal to
An electric fan has blades of length 30 cm as measured from the axis of rotation. If the fan is rotating at 1200 rpm, the acceleration of a point on the tip of the blade is about
A rectangular block is 5 cm $\times$ 5 cm $\times$ 10 cm in size. The block is floating in water with 5 cm side vertical. If it floats with 10 cm side vertical, what change will occure in the level of water?
There is no change in the volume of a wire due to change in its length on stretching. The Poisson's ratio of the material of the wire is
An engineer claims to have made an engine delivering 10 kW power with fuel consumption of $1\,gs^{-1}$. The calorific value of fuel is 2 $kcalg^{-1}$. This claim is
ln an AC circuit, the current lags behind the voltage by $\pi$/3. The components of the circuit are
The paramagnetic nature of oxygen molecular is best explained on the basis of
By keeping moment of inertia of a body constant, if we double the time period, then angular momentum of body
In series L-C-R circuit, the capacitance is changed from C to 2C. The inductance should be changed from L to ... to obtain same resonance frequency.
The path difference produced by two waves is 3.75 $\mu$m and the wavelength is 5000 $\mathring {A}$. The point is
The simple pendulum acts as second's pendulum on earth. Its time on a planet, whose mass and diameter are twice that of earth is
The energy stored per unit volume in copper wire, which produces longitudinal strain of 0.1% is $(Y =1.1\times10^3 Nm^{-2})$
An electron projected in a perpendicular uniform magnetic field of $3 \times 10^{-3} T, $ moves in a circle of radius 4 mm. The linear momentum of electron $(in \, kg-ms^{-1}) $ is
Consider a short magnetic dipole of magnetic length 10 cm. Its geometric length is
Angular velocity of hour hand of a watch is
The binding energy of a satellite of mass m in a orbit of radius r is (R = radius of earth, g = acceleration due to gravity)
Two perfect gases at absolute temperatures $T_1$ and $ T_2$ are mixed. There is no loss of energy. The temperature of mixture of masses of molecules are $ m_1$ and $ m_2$ and the number of molecules in the gases are $n_1 $ and $ n_2 $ respectively, is
Direction of magnetic field at equatorial point is
At constant pressure, which of the following is true ?
The displacement of a particle performing simple harmonic motion is given by, x=8sin$\omega t+6cos \omega t$, where distance is in cm and time is in second. The amplitude of motion is
The minimum phase difference between two simple harmonic oscillations, $ \, \, \, \, \, \, \, \, y_1 =\frac{1}{2}sin \omega t +\frac{\sqrt 3}{2} cos \omega t$ $ \, \, \, \, \, \, \, \, \, \, \, y_2 =sin \omega t +cos \omega t$ is