List of top Physics Questions asked in MHT CET

A flywheel of mass 2 kg has radius of gyration 0.5 m. If it makes 10 r.p.s., then its rotational kinetic energy will be

Two waves given as \( y_1 = 10 \sin t \, \text{cm} \) and \( y_2 = 10 \sin \left( \omega t + \frac{\pi}{3} \right) \, \text{cm} \) are superimposed. What is the amplitude of the resultant wave?

A sample of radioactive element contains \( 8 \times 10^{16} \) active nuclei. The half-life of the element is 15 days. The number of nuclei decayed after 60 days is

In the equation \( P = \frac{C+S}{D} \), \( P \) and \( S \) represent pressure and distance respectively. The dimensions of \( \frac{P}{D} \) are

At any instant, the magnitude of the centripetal force on a particle of mass \( m \) performing circular motion is given by

A cube of mass \( M \) and side \( L \) is fixed on the horizontal surface. Modulus of rigidity of the material of the cube is \( \eta \). A force is applied perpendicular to one of the side faces. When the force is removed, the cube executes small oscillations. The time period is

A body attached to a spring oscillates in horizontal plane with frequency \( n \). Its total energy is \( E \). If the velocity in the mean position is \( v \), then the spring constant is

A charged particle carrying a charge \( q \) and moving with velocity \( v \), enters into a solenoid carrying a current \( I \), along its axis. If \( B \) is the magnetic induction along the axis of solenoid, then the force \( F \) acting on the charged particle will be

In the given electrical network, the correct equation for the loop 'ABEFA' is

The pressure at the bottom of a tank containing liquid does not depend upon the

Two coils of wire A and B are placed mutually perpendicular as shown. When current is changed in any one coil,

A parallel monochromatic beam of light is incident normally on a narrow slit. A diffraction pattern is formed on a screen placed perpendicular to the direction of incident beam. At the first maximum of the diffraction pattern, the phase difference between the rays coming from the edges of the slit is

A thin prism \( P \) of angle 4° made up of glass of refractive index 1.48 is combined with another prism \( Q \) made up of glass of refractive index 1.64 to produce dispersion without deviation. The angle of prism \( Q \) is

A galvanometer of resistance 20 Ω gives a full scale deflection when a current of 0.04 A is passed through it. To convert it into an ammeter of range 20 A, the resistance that must be connected in series with the coil of the galvanometer is (Galvanometer is shunted by 0.05 Ω)

The magnetic moment of a circular coil carrying current \( I \), having radius \( r \) and number of turns \( n \) is proportional to

The frequency of a particle performing linear S.H.M. is \( \frac{7}{2\pi} \) Hz. The differential equation of S.H.M. is

When a capillary is dipped vertically in water, rise of water in capillary is \( h \). The angle of contact is zero. Now the tube is depressed so that its length above the water surface is \( h/2 \). The new apparent angle of contact is

If the length and diameter of a wire are decreased, then for the same tension the natural frequency of stretched wire will

A motorcycle racer takes a round with speed 20 m/s on a curved road of radius 40 m. The leaning angle of the motorcycle with vertical for safe turn is

Two parallel long wires 'A' and 'B' carry currents \( i_1 \) and \( i_2 \) (\( i_1<i_2 \)). When \( i_1 \) and \( i_2 \) are in the same direction, the magnetic field at a point midway between the wires is 10 µT. If \( i_2 \) is reversed, then the field becomes 30 µT. The ratio of \( \frac{i_1}{i_2} \) is

The vertical and horizontal components of Earth's magnetic field at a place are \( 2 \times 10^{-5} \, \text{T} \) and \( 2\sqrt{3} \times 10^{-5} \, \text{T} \) respectively. The angle of dip and resultant Earth's magnetic field is

For a photocell, the work function is \( \phi \) and the stopping potential is \( V_s \). The wavelength of the incident radiation can be expressed as

A given metal wire has length 1m, linear density \( 0.6 \, \text{kg/m} \) and uniform cross-sectional area \( 10^{-7} \, \text{m}^2 \) is fixed at both ends. The temperature of wire is decreased by \( 40^\circ C \). The fundamental frequency of the transverse wave is \( \gamma = 2 \times 10^{11} \, \text{N/m}^2 \), coefficient of linear expansion of metal is \( 1.2 \times 10^{-5} / ^\circ C \). The frequency is

The average force applied on the walls of a closed container depends as \( T^x \), where \( T \) is the temperature of an ideal gas. The value of \( x \) is

A vector \( \vec{F}_1 \) is a unit vector along the positive direction of x-axis and \( \vec{F}_2 \) is of magnitude 4. If the vector product of \( \vec{F}_1 \) and \( \vec{F}_2 \) is zero, then \( \vec{F}_2 \) is