arwa and physics
Main purpose of this channel is: simplest approach to solve numericals especially physics ,want to help all students who cannot afford coaching or struggling with numericals or concepts etc..by solving cbse board papers / competitive papers
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Electric charge is transferred to an irregular metallic disk as shown in figure. If sigma1
The plane of a Planoconvex lens is silvered the refractive index of material and radius of curvature
The number of turns between different pairs of output terminals are shown for a step-up transformer
A parallel plate capacitor consisting of two circular plates of radius 10 cm is being charged by a
A soft iron rod X is allowed to fall on the two poles of a shape permanent magnet as shown a coil
Which pair of readings of ideal voltmeter and ideal ammeter in the given circuit is possible when a
Consider two identical dipoles D1 and D2 Charges -q and q of dipole D1 are located at (0,0) and(a,0)
Space between the plates of a parallel plate capacitor of plate area 4 cm2 and separation of 1.77 mm
The focal length of a concave mirror in air is f. When the mirror is immersed in liquid of
A coil of an AC generator having 100 turns and area 0.1m² each rotates at half a rotation per second
Two long solenoid is of radii r1 and r2 and number of terms per unit length n1 and n2 respectively
A battery of EMF 12 V and internal resistance 0.5 ohm is connected to 9.5 ohm resistor through the
two identical point charges are placed at the two vertices A and B of an equilateral triangle of an
A proton moving with velocity V in a non-uniform magnetic field traces a path as shown in the figure
Assertion in an ideal step down transformer the electrical energy is not lost
Assertion out of infrared and radio waves, the radio waves show more diffraction effect
Assertion in bohr model of hydrogen atom the angular momentum of an electron in the nth orbit is
Assertion in a semiconductor diode the thickness of depletion layer is not fixed
When the resistance between p and n regions is very high then the p-n junction diode acts as
Atomic spectral emission lines of hydrogen atom are incident on a zinc surface. The lines which can
The energy of an electron in a hydrogen atom in ground state is - 13.6 eV Its energy in an orbit
A tub is filled with a transparent liquid to a height of 30.0 cm the apparent depth of a coin lying
Which one of the following statements is correct electric field due to static charges isconservative
A transformer is connected to a 200 V AC source. The transformer supplies 3000 V to a device. If the
The alternating current I in an inductor is observed to vary with the time t as shown in the graph
In the figure X is a coil wound over a hollow wooden pipe a permanent magnet is pushed at a constant
The magnetic field due to a small magnetic dipole of dipole moment M at a distance r from centre
A 1 cm straight segment of a conductor carrying 1A current in x-direction lies symmetrically at
a student has three resistors each of resistance R to obtain a resistance of 2/3R she should connect
Two charges -q each are placed at the vertices A and B of an equilateral triangle ABC if M is the