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

Magnetization of a sample is ______.

ln, a Wheatstone network, P = Q = R = 8 `Omega` and S is 10 `Omega`. The required resistance to be connected to S so that network is balanced is ______.

A bar magnet has length 3 cm, cross-sectional area 4 cm^2, and magnetic moment 6 Am². The intensity of magnetisation of bar magnet is ______.

A transverse wave of amplitude 0.05 m and frequency 250 Hz is travelling along a stretched string with a speed of 100 m/s. What would be the displacement of a particle at a distance 1.1 m origin after 0.02 second?

`[sin  pi/2=1,  cos  pi/2=0]`

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)

Two parallel conducting wires of equal lengths placed distance 'd' apart carry currents 'I₁' and 'I₂' respectively in opposite directions. The resultant magnetic field at the midpoint of both the wires is ______.

(µ₀ = permeability of free space.)

The resistances in left and right gap of a meter-bridge are 3 `Omega` and 5 `Omega` respectively. When the resistance in the left gap is increased by 10%, the balance point shifts nearly by ______.

The current through 1 `Omega` resistance in the following circuit is ______. 

The equation of wave motion is `y = 6 sin[12pit-0.02pix+pi/2],` where x is in m and t in second. The velocity of the wave is ______.

If the radius of the spherical Gaussian surface is increased then the electric flux due to a point charge enclosed by the surface ______ 

When an unknown resistance 'X' is connected in the left gap of a meter bridge and a known resistance 'R' in the right gap, a null point is obtained at 40 cm from the left end. If a 2 Ω resistance is connected in series with 'X' the null point shifts towards the right by 10 cm, with some resistance in the right gap. The value of 'X' must be ______

In a Wheatstone's bridge, the resistance in the three arms are P, Q, R, and its fourth arm has a parallel combination of two resistances S₁ and S₂, The balancing condition of the bridge is ______ 

The magnetic moment produced in a substance of mass 5 gram is 6 x 10^-7 Am² If its density is 5 g/cm³, then intensity of magnetization in `"A"/"m"` will be ____________.

A cell having an emf E and internal resistance r is connected across a variable external resistance R. As the resistance R is increased, the plot of potential difference V across R is given by ______.

In the figure, a very large plane sheet of positive charge is shown. P₁ and P₂ are two points at distance l and 2l from the charge distribution. If σ is the surface charge density, then the magnitude of electric fields E₁ and E₂ at P₁ and P₂ respectively are ______.

A ball is projected with kinetic energy E, at an angle of 60° to the horizontal. The kinetic energy of this ball at the highest point of its flight will become ______.

The displacement-time graphs of two particles A and B are straight lines making angles of 30° and 60° respectively with the time axis. If the velocity of A is v_A and that of B is v_B, the value of v_A/v_B is ______.

The wavelength of two waves are 50 and 51 cm respectively. If the temperature of the room is 20°C then what will be the number of beats produced per second by these waves, when the speed of sound at 0°C is 332 m/s?

The width of a slit is 0.012 mm. Monochromatic light is incident on it. The angular position of first bright line is 5.2°. The wavelength of incident light is ______. [sin 5.2° = 0.0906].

In communication system, the process of superimposing a low frequency signal on a high frequency wave is known as ______.