MAH-MHT CET (PCM/PCB) entrance exam Question Bank Solutions

In the figure shown, the voltage across C₃ will be 

For a uniformly charged plane sheet, the variation of electric field (E) with distance (d) is correctly shown graphically in graph.

In the following electrical network, the value of 'I' 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 ______.

The current in the arm CD of the circuit will be

A sphere encloses an electric dipole with charges ± 3 x 10^-6 C. What is the total electric flux across the sphere?

The current I₃ in the following circuit is ____________.

Magnetic flux passing through a coil is initially 6 x 10^-4 Wb. It reduces to 10 % of its original value in 't' second. If the e.m.f. induced is 0.54 mV then 't' in second is ____________.

According the Kirchhoff's law, in any analytic circuit, if the direction of current is assumed opposite, then the value of current will be ____________.

A pendulum clock is running fast. To correct its time, we should ______ 

A cube of mass 'M' and side 'L' is fixed on the horizontal surface. The modulus of rigidity of the material of the cube is 'η'. A force is applied perpendicular to one of the side faces. When the force is removed, the cube executes small oscillations. The time period ______

A parallel beam of fast-moving electrons is incident perpendicular on a narrow slit. The distance between slit and screen is large. If the speed of the incident electrons is increased then which one of the following statements is correct?

In the biprism experiment, fringes are obtained using monochromatic light. The distance between the 5^th bright band and 9^th dark band on the same side of the central bright band, in terms of the fringe width 'X' is ______

When light enters glass from vacuum then the wavelength of light ______ 

A metal sphere of radius 1 m is charged with 10^-2 C in air. Its bulk modulus is 10¹¹/4π². The volume strain in the sphere is ______ 

(ε₀ = permittivity of free space)

Kirchhoff's law of radiation proves that ______ 

Using Kirchhoff's law, find the current flowing through the given circuit.

A bar magnet of magnetic moment 5 Am² is placed in a uniform magnetic induction 3 x 10^-5 T. If each pole of a magnet experiences a force of 2.5 x 10^-4 N then the magnetic length of the magnet is ____________.

A vertical spring oscillates with period of 6 s with mass 'm' suspended from it. When the mass is at rest, the spring is stretched through a distance of ______.

(Take g = π²)

Electric field intensity at a point outside uniformly charged thin infinite plane sheet is 'E₁ '. The electric field intensity at a point near and outside the surface of a positively charged conductor of any shape is 'E₂'. The relation between magnitude of E₁ and E₂ is ______.

(assumed air as the medium)