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

The current drawn from the battery in the given network is ______ 

(Internal resistance of the battery is neglected)

A wire has a length of 2m and a resistance of 10Ω. It is connected in series with a resistance of 990Ω and a cell of e.m.f. 2V. The potential gradient along the wire will be ______

A straight wire of length 0.5 m and carrying current of 1.2A is placed in a uniform magnetic field of induction 2T. The magnetic field is perpendicular to the length of the wire. What is the force acting on the wire? sin 90° = 1

In the experiment to determine the internal resistance of a cell (E₁) using a potentiometer, the resistance drawn from the resistance box is 'R'. The potential difference across the balancing length of the wire is equal to the terminal potential difference (V) of the cell. The value of internal resistance (r) of the cell is ______

A potentiometer wire has a length of 4m and resistance of 5Ω. It is connected in series with 495 Ω resistance and a cell of e.m.f. 4V. The potential gradient along the wire is ______

The ratio of slopes m1: ro2 of the lines given in the following graphs is, ______.

A small quantity of paramagnetic liquid is taken in a watch - glass and kept on two dissimilar magnetic poles. The liquid ____________.

A domain in a ferromagnetic substance is in the form of a cube of side length 1 µm. If it contains 6 x 10¹⁰ atoms and each atomic dipole has a dipole moment of 7 x 10^-24 Am², then magnetization of the domain is ____________.

In an LCR circuit, inductive reactance is 30 `Omega` and capacitive reactance 30 `Omega`. The resistance was found to be 40 `Omega`. The probable impedance of the combination is ____________.

A light of frequency 'v' is incident on the metal surface whose threshold frequency is 'v₀'. If v = v₀, then [c = speed of light in medium] ____________.

In experiment of photoelectric effect, the stopping potential for incident yellow light of wavelength 5890 Å is 4 volt. If the yellow light is replaced by blue light of wavelength 4000 Å, the stopping potential is ____________.

Intensities of two interfering waves are I₀ and 9I₀. The resultant intensity at a point at which waves meet with a phase difference of `pi/3` radian is ______.

When the work function of a metal increases, maximum kinetic energy of emitted photoelectrons ____________.

The radius of orbit of an electron in hydrogen atom in its ground state is 5.3 x 10^-11 m After collision with an electron, it is found to have a radius of 13.25 x 10^-10 m. The principal quantum number n of the final state of the atom is ______.

Which one of the following graphs represents the variation of photoelectric current (i) with intensity (I) of the incident light?

With an increase in the frequency of an A.C. supply, the inductive reactance ______.

Answer the following question regarding earth’s magnetism:

The angle of dip at a location in southern India is about 18°. Would you expect a greater or smaller dip angle in Britain?

A body is executing S.H.M. Its potential energy is E₁ and E₂ at displacements x and y respectively. The potential energy at displacement (x + y) is ______.

A simple pendulum of length 'L' is suspended from a roof of a trolley. A trolley moves in horizontal direction with an acceleration 'a'. What would be the period of oscillation of a simple pendulum?

(g is acceleration due to gravity)

Two waves are represented by y₁ = a sin `(omega"t" + pi/6)` and y₂ = a cos `omega"t"`. What will be their resultant amplitude?