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CBSE 12th Physics (Term 1) Paper 2021-22

Exam Held on Fri Dec 10 2021 11:30:00 GMT+0000 (Coordinated Universal Time)
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Physics

A negatively charged object X is repelled by another charged object Y. However a...
In an experiment three microscopic latex spheres are sprayed into a chamber and ...
An object has charge of 1 C and gains 5.0 $$\times$$ 10<sup>18</sup> electrons. ...
Kirchhoff's first rule $$\Sigma$$I = 0 and second rule $$\Sigma$$IR = $$\Sigma$$...
The electric power consumed by a 220 V $$-$$ 100 W bulb when operated at 110 V i...
Which of the following has negative temperature coefficient of resistivity?
Two wires carrying currents I<sub>1</sub> and I<sub>2</sub> lie, one slightly ab...
Two parallel conductors carrying current of 4.0 A and 10.0 A are placed 2.5 cm a...
If an ammeter is to be used in place of a voltmeter, then we must connect with t...
The magnetic field at the centre of a current carrying circular loop of radius R...
The self-inductance of a solenoid of 600 turns is 108 mH. The self-inductance of...
The rms current in a circuit connected to a 50 Hz ac source is 15 A. The value o...
In a circuit the phase difference between the alternating current and the source...
The electric potential V at any point (x, y, z) is given by V = 3x<sup>2</sup> w...
Which of the diagrams correctly represents the electric field between two charge...
A variable capacitor is connected to a 200 V battery. If its capacitance is chan...
A potential difference of 200 V is maintained across a conductor of resistance 1...
The impedance of a series LCR circuit is -
When an alternating voltage E = E<sub>o</sub> sin $$\omega$$t is applied to a ci...
A current carrying wire kept in a uniform magnetic field, will experience a maxi...
The voltage across a resistor, an inductor, and a capacitor connected in series ...
In a dc circuit the direction of current inside the battery and outside the batt...
The magnitude of electric field due to a point charge 2q, at distance r is E. Th...
The horizontal component of earth's magnetic field at a place is 0.2 G whereas i...
The current in the primary coil of a pair of coils changes from 7 A to 3 A in 0....
A square sheet of side 'a' is lying parallel to XY plate at z = a. The electric ...
Three charges q, $$-$$q and q<sub>0</sub> are placed as shown in figure. The mag...
A + 3.0 nC charge Q is initially at rest at a distance of r<sub>1</sub> = 10 cm ...
A car battery is charged by a 12 V supply, and energy stored in it is 7.20 $$\ti...
A straight conducting rod of length l and mass m is suspended in a horizontal pl...
A constant current is flowing through a solenoid. An iron rod is inserted in the...
A circuit is connected to an ac source of variable frequency. As the frequency o...
If n, e, $$\tau$$ and m have their usual meanings, then the resistance of a wire...
A proton and an alpha particle move in circular orbits in a uniform magnetic fie...
A coil of area 100 cm<sup>2</sup> is kept at an angle of 30$$^\circ$$ with a mag...
A 15 $$\Omega$$ resistor, an 80 mH inductor and a capacitor of capacitance C are...
Four objects W, X, Y and Z, each with charge +q are held fixed at four points of...
Two sources of equal emf are connected in series. This combination is, in turn c...
Which of the following statements is correct?
The equivalent resistance between A and B of the network shown in figure is<br/>...
A bar magnet has magnetic dipole moment $$\overrightarrow M $$. Its initial posi...
Two charges 14 $$\mu$$C and $$-$$4 $$\mu$$C are placed at ($$-$$12 cm, 0, 0) and...
A 300 $$\Omega$$ resistor and a capacitor of $$\left( {{{25} \over \pi }} \right...
The core of a transformer is laminated to reduce the effect of
Assertion (A) : A negative charge in an electric field moves along the direction...
Assertion (A) : The poles of a bar magnet cannot be separated.<br/><br/>Reason (...
Assertion (A) : When radius of a current carrying loop is doubled, its magnetic ...
Assertion (A) : Higher the range, lower is the resistance of an ammeter.<br/><br...
Assertion (A) : A step-up transformer cannot be used as a step-down transformer....
Equipotentials at a large distance from a collection of charges whose total sum ...
Four charges $$-$$q, $$-$$q, +q and +q are placed at the corners of a square of ...
The points with the same potential are -
The current through branch bg is -
The power dissipated in R<sub>1</sub> is -
The potential difference across R<sub>3</sub> is -

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