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

For a wave, y = 0.0002 sin`[2pi(110"t"-x/3)+pi/3]` is travelling in a medium. The energy per unit volume being transferred by wave if density of medium is 1.5 kg/m³, is ______.

A γ-ray photon is passing near a nucleus and breaks into an electron and positron. The region contains a uniform magnetic field B perpendicular to the plane of motion. Find the time after which they again converted into γ-ray. The force of electrostatic interaction and gravitational interaction may be neglected.

Two positively charged particles each having charge Q and are d distance apart. A third charge is introduced in midway on the line joining the two. Find nature and magnitude of third charge, so that the system is in equilibrium ______.

A current carrying closed loop in the form of a right angled isosceles ΔABC is placed in a uniform magnetic field acting along AB. If the magnetic force on the arm BC is F, then force on the arm AC is ______.

The magnetic moment of the current carrying loop shown in the figure is equal to ______.

Choose the correct option.

If the pressure of an ideal gas decreases by 10% isothermally, then its volume will ______.

A given sample of an ideal gas occupies a volume V at a pressure P and absolute temperature T. The mass of each molecule of the gas is m. Which of the following gives the density of the gas?

If M₀ and L₀ denote the orbital angular moment and the angular momentum of the electron due to its orbital motion, then the gyromagnetic ratio is given by ______

The equation of a simple harmonic motion is given by, x = 8 sin (8πt) + 6 cos (8πt), the initial phase angle is ______

A circular coil of radius R has a resistance of 40 Ω. Figure shows two points P and Q on the circumference separated by a distance `(pi"R")/2`, which are connected to a 16 V battery with internal resistance of 0.5 Ω. What is the value of current I flowing through the circuit?

The magnetic moment of electrons due to orbital motion is proportional to ______.

(n = principal quantum numbers)

Which of the following is not a property of light?

Temperature and Heat are ______

The S.I. unit of gyromagnetic ratio is ______

At extreme positions of a particle executing simple harmonic motion, ______

If the distance between the sun and the earth is made three times, then attraction between the two will ______

A charged particle is moving in a uniform magnetic field in a circular path of radius R. When the energy of the particle becomes three times the original, the new radius will be ______.

A ray of light is incident at an angle ion one face of prism of small angle A and emerges normally from the other surface. µ is the refractive index of the material of the prism. The angle of incidence is _____________.

Lenz's law obeys the principle of ______ conservation.

Alternating current cannot be measured by D.C. ammeter because ____________.