List of top Physics Questions asked in MHT CET

If the frequency of oscillation of a simple pendulum in simple harmonic motion is \( n \), then frequency of oscillation of simple pendulum when length is 4 times is:

The phase difference between the voltage and the current in an a.c. circuit is \( \frac{\pi}{4} \). If the frequency is 50 Hz, then the phase difference is equivalent to a time of:

A particle of mass 4 gram moves along a circle of radius \( 10^2 / 2\pi \) cm with constant tangential acceleration. After beginning of the motion, by the end of second revolution, the kinetic energy of the particle becomes \( 18 \times 10^{-5} \) J. The magnitude of tangential acceleration is:

Let the physical quantity be \( x = \frac{a^3b^2}{c} \). If the percentage error in the measurement of \( a \), \( b \), and \( c \) is 2%, 3%, and 4% respectively, then the percentage error in the measurement of \( x \) is:

The sensitivity of a milliammeter of range 0 to 50 mA is \( \frac{x}{\text{div}} \, \text{mA} \). If it is converted into an ammeter of range 500 mA by using a suitable shunt then the sensitivity will be:

The bob of a simple pendulum is released at time \( t = 0 \) from a position of small angular displacement. Its linear displacement is \( l \) (length of simple pendulum) and \( g \) (acceleration due to gravity), \( A \) = amplitude of S.H.M.

Following graph shows the variation of load (\( W \)) versus elongation (\( l \)) for four wires of the same length and material represented by lines OP, OQ, OR, and OS. Which line represents the thickest wire?

A block of mass \( m \) moving on a frictionless surface at speed \( V \) collides elastically with a block of same mass, initially at rest. Now the first block moves at an angle \( \theta \) with its initial direction and has speed \( V_1 \). The speed of the second block after collision is:

A charge \( q \) is circulating with constant speed \( V \) in a semi-circular loop of wire of radius \( R \). The magnetic moment of this loop is:

In the following circuit, what is the voltage across PQ?

Which graph shows the variation of magnetic susceptibility (\( \chi \)) with magnetising field (\( H \)) for a paramagnetic substance?

Find the dimensions of the quantity \( x \) in the equation \( T = 2\pi \left( \frac{ML^3}{3XY} \right)^{\frac{1}{2}} \), where \( T \) is the time period, \( M \) is mass, \( L \) is length, and \( Y \) is the Young’s modulus.

When an unknown resistance $X$ is connected in the left gap of a meter bridge and a known resistance $R$ in the right gap, null point is obtained at $40\ \text{cm}$ from the left end. If a $2\ \Omega$ resistance is connected in series with $X$, the null point shifts towards right by $10\ \text{cm}$, with same resistance in right gap. The value of $X$ must be

A stationary sound wave has a frequency of $165\ \text{Hz}$. If the speed of sound in air is $330\ \text{m/s}$, then the distance between a node and the adjacent antinode is

A galvanometer having a resistance of $180\ \Omega$ is shunted by a wire of resistance $2\ \Omega$. If the total current passing through the combination is $2\ \text{A}$, then current through shunt will be

A resonance tube closed at one end is of height $1.5\ \text{m}$. A tuning fork of frequency $340\ \text{Hz}$ is vibrating above the tube. Water is poured in the tube gradually. The minimum height of water for which resonance is obtained is (Neglect end correction. Speed of sound in air = $340\ \text{m/s}$)

For a certain organ pipe, three successive resonant frequencies are heard as $300\ \text{Hz}$, $420\ \text{Hz}$ and $540\ \text{Hz}$. If the speed of sound in air is $360\ \text{m/s}$, then the pipe is a

A plane surface of area $200\ \text{cm^2}$ is kept in a uniform electric field of intensity $200\ \text{N/C}$. If the angle between the normal to the surface and the field is $60^\circ$, then the electric flux through the surface is $\left[\cos 60^\circ = \dfrac{1}{2}\right]$

The frequency of a tuning fork is $220\ \text{Hz}$ and the velocity of sound in air is $330\ \text{m/s}$. When the tuning fork completes $80$ vibrations, the distance travelled by the wave is

What is the least radius of curve on a horizontal road, at which a vehicle can travel with a speed of $36\ \text{km/h}$ at an angle of inclination $45^\circ$? $\left[g = 10\ \text{m/s}^2,\ \tan 45^\circ = 1\right]$

Forces $\vec{P}$ and $\vec{Q}$ have resultant $\vec{R}$ whose magnitude is $40\ \text{N}$. $\vec{R}$ makes an angle $45^\circ$ with $\vec{P}$ as well as $\vec{Q}$. The magnitude of $\vec{P}$ is $\left(\tan \dfrac{\pi}{4} = 1\right)$

Time taken by sunlight to penetrate $2\ \text{mm}$ through a glass slab is of the order $\left[\text{Refractive index of glass} = 1.5,\ \text{velocity of light in air} = 3 \times 10^8\ \text{m/s}\right]$

A block of mass $1\ \text{kg}$ is kept on an ice surface. When a velocity of $4\ \text{m/s}$ is given to it, it stops by friction in $5\ \text{s}$. The coefficient of friction is $\left[g = 10\ \text{m/s}^2\right]$

Force $F = P + Qt + \dfrac{1}{r + xs} + c\sin(\omega t + \phi)$ where $x$ and $t$ represent displacement and time respectively. The dimensions of the product $cs$ are

If a capillary tube is immersed vertically in water, rise of water in capillary is $h_1$. When the whole arrangement is taken to a depth $d$ in a mine, the water level rises to $h_2$. The ratio $\dfrac{h_2}{h_1}$ is $\left(R = \text{radius of earth}\right)$