List of top Physics Questions asked in MHT CET

A convex lens is dipped in a liquid whose refractive index is equal to the refractive index of the lens material. Then its focal length will

Three pure inductors each of inductance $6\text{ H}$ are connected as shown in the figure. Their equivalent inductance between the points 'P' and 'Q' is

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A, B and C are three parallel conductors of equal lengths carrying currents $I$, $I$ and $2I$ respectively. Distance between A and B is $x$ and that between B and C is also $x$. $F_1$ is the force exerted by conductor B on A. $F_2$ is the force exerted by conductor C on A. Current $I$ in A and $I$ in B are in the same direction and current $2I$ in C is in the opposite direction. Then

Photoemission from a metal surface takes place for frequencies $\nu_1$ and $\nu_2$ of incident rays ($\nu_1 > \nu_2$). The maximum kinetic energy of the photoelectrons emitted is in the ratio $1 : K$. The threshold frequency ($\nu_0$) of the metallic surface is

The angle of banking $\theta$ for a meter gauge railway line is given by $\theta = \tan^{-1}\left(\frac{1}{20}\right)$. What is the elevation of the outer rail above the inner rail?

A body at rest falls through a height 'h' with velocity 'V'. If it has to fall down further for its velocity to become three times, the distance travelled in that interval is

A child is sitting on a swing which performs S.H.M. It has minimum and maximum heights from the ground as $0.75\text{ m}$ and $2\text{ m}$ respectively. Its maximum speed will be [$g = 10\text{ m/s}^2$]

The refractive index of glass is 1.5 and that of water is 1.33. The critical angle for a ray of light going from glass to water is

The north pole of a long horizontal bar magnet is being brought towards a closed circuit consisting of a coil. The direction of induced current produced in it is

The wave number of the last line of the Balmer series in the hydrogen spectrum will be ($R = 10^7\text{ m}^{-1}$)

If $E$ is the kinetic energy per mole of an ideal gas and $T$ is the absolute temperature, then the universal gas constant ($R$) is given as

LED is manufactured using zinc selenide then it emits

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)

Ratio of centripetal acceleration for an electron revolving in 3rd and 5th Bohr orbit of hydrogen atom is

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

When a piece of polythene is rubbed with wool, a negative charge of $4 \times 10^{-7}\text{ C}$ is developed on the polythene. The number of electrons transferred from wool to polythene is [$e = 1.6 \times 10^{-19}\text{ C}$]

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

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

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

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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

A current through 1 ohm resistance in the following circuit is

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.)

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)