List of top Physics Questions asked in MHT CET

In thermodynamics, for an isochoric process, which one of the following statement is INCORRECT?

In an ideal junction diode, the current flowing through PQ is

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The ratio of energy required to raise a satellite of mass $m$ to height $h$ above the earth's surface to that required to put it into the orbit at same height is ($R$ = radius of earth)

Combination of NAND gates is shown in the figure. It is equivalent to

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Equal volumes of two gases are kept in different containers having densities in the ratio $1 : 16$. They exert equal pressures on the wall of their respective containers. Then the ratio of their r.m.s. velocities is

A current through 1 ohm resistance in the following circuit is

Three bodies $P$, $Q$, and $R$ have masses $m\text{ kg}$, $2m\text{ kg}$, and $3m\text{ kg}$ respectively. If all the bodies have equal kinetic energy, then the greater momentum will be for body/bodies

A molecule of mass $m$ moving with velocity $v$ makes 5 elastic collisions with a wall of container per second. The change in momentum of the wall per second in 5 collisions will be

In Young's double-slit experiment, interference fringes are obtained on a screen placed at a distance of $75\text{ cm}$ from the slits. When the separation between the two narrow slits is doubled, the fringe width decreases. In order to maintain the initial fringe width, the screen should be moved through a distance of

A moving coil galvanometer is converted into an ammeter, reading upto 0.04 A by connecting a shunt of resistance \(3r\) across it and then into an ammeter reading upto 0.8 A, when a shunt of resistance \(r\) is connected across it. What is the maximum current which can be sent through this galvanometer if no shunt is used?

What is the ratio of the velocity of sound in hydrogen (\(\gamma = \frac{7}{5}\)) to that in helium (\(\gamma = \frac{5}{3}\)) at the same temperature? (Molecular weight of hydrogen and helium is 2 and 4 respectively.)

Equation of two simple harmonic waves are given by \(Y_1 = 2 \sin 8\pi \left( \frac{t}{0.2} - \frac{x}{2} \right) m\) and \(Y_2 = 4 \sin 8\pi \left( \frac{t}{0.16} - \frac{x}{1.6} \right) m\) then both waves have

The inductive reactance of a coil is \(R\ \Omega\). If the inductance of a coil is doubled and frequency of a.c. supply is also doubled then the new inductive reactance will be

A particle performs rotational motion with an angular momentum \(L\). If frequency of rotation is doubled and its kinetic energy becomes one fourth, the angular momentum becomes.

For a body of mass \(m\), the acceleration due to gravity at a distance \(R\) from the surface of the earth is \(\frac{g}{4}\). Its value at a distance \(\frac{R}{2}\) from the surface of the earth is (\(R =\) radius of the earth, \(g =\) acceleration due to gravity)

Two coherent sources of wavelength \(\lambda\) produce steady interference pattern. The path difference corresponding to \(10^{\text{th}}\) order maximum will be

Under isothermal conditions, two soap bubbles of radii \(r_1\) and \(r_2\) combine to form a single soap bubble of radius \(R\). The surface tension of soap solution is (\(P = \text{outside pressure}\))

In a capillary tube having area of cross-section \(A\), water rises to a height \(h\). If cross-sectional area is reduced to \(\frac{A}{9}\), the rise of water in the capillary tube is

Water rises upto a height 10 cm in a capillary tube. It will rise to a height which is much more than 10 cm in a very long capillary tube if the apparatus is kept.

Two identical parallel plate air capacitors are connected in series to a battery of emf \(V\). If one of the capacitors is inserted in liquid of dielectric constant \(K\), then potential difference of the other capacitor will become

In LCR series resonant circuit, at resonance, voltage across \(L\) and \(C\) will cancel each other because they are

Which element among the following is ferromagnetic?

A hollow charged metal sphere has radius 'R'. If the potential difference between its surface and a point at a distance '5R' from the centre is V, then magnitude of electric field Intensity at a distance '5R' from the centre of sphere is

The relation between magnetic moment 'M' of revolving electron and principle quantum number 'n' is

In potentiometer experiment, null point is obtained at a particular point for a cell on potentiometer wire '$x$' cm long. If length of potentiometer wire is increased by few centimeter without changing the cell, the balancing length will [Driving source is not changed]