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

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 maximum velocity of photoelectron emitted is 4.8 m/s. If the e/m ratio of the electron is 1.76 × 10¹¹ C/kg, then stopping potential is given by ______ 

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

(n = principal quantum numbers)

The ratio of energies of photons produced due to transition of electron of hydrogen atom from its (i) second to first energy level and (ii) highest energy level to second level is respectively.

The kinetic energy of the most energetic photoelectron emitted from a metal surface is doubled when the wavelength of the incident radiation is reduced from λ₁ to λ₂. The work function of the metal is ______

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, ______

Which one of the following is TRUE in photoelectric emission?

The following graph shows the stopping potential V₀ versus frequency v for photoelectric emission from two metals A and B. The slope of each of the lines gives ______

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 ______.

When a photon enters glass from air, which one of the following quantity does not change?

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 ____________.

The graph of stopping potential `"V"_"s"` against frequency v of incident radiation is plotted for two different metals P and Q as shown in the graph. Φ_P and Φ_Q are work-functions of P and Q respectively, then

When light falls on a metal surface, the maximum kinetic energy of the emitted photoelectrons depends upon ______