Class 12 11 10 CUET Notes CBSE


Kanal geosi va tili: Butun dunyo, Inglizcha
Toifa: Ta’lim


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What is the electric field inside a charged conductor in electrostatic equilibrium?
So‘rovnoma
  •   Zero
  •   Non-zero but constant
  •   Varies radially from the center
  •   Depends on the charge distribution
551 ta ovoz


When a dielectric material is placed in an electric field, what happens to the capacitance of a parallel plate capacitor?
So‘rovnoma
  •   Increases
  •   Decreases
  •   Remains constant
  •   Depends on the voltage
405 ta ovoz


What is the potential difference across a resistor if a current of 2 A flows through it for 5 seconds?
So‘rovnoma
  •   10 V
  •   2 V
  •   7.5 V
  •   0.4 V
353 ta ovoz


In a charged parallel plate capacitor, what happens to the energy stored when the distance between the plates is doubled?
So‘rovnoma
  •   Doubles
  •   Halves
  •   Quadruples
  •   Becomes four times
314 ta ovoz


What is the electric potential at the center of a uniformly charged solid sphere?
So‘rovnoma
  •   Zero
  •   Non zero and constant
  •   Maximum at the center
  •   Minimum at the center
310 ta ovoz


What is the direction of the electric field lines outside a uniformly charged conducting sphere?
So‘rovnoma
  •   Radially outward
  •   Radially inward
  •   Tangential to the surface
  •   Random
280 ta ovoz


What is the work done in moving a charge of 5 C across a potential difference of 10 V?
So‘rovnoma
  •   50 J
  •   15 J
  •   25 J
  •   5 J
296 ta ovoz


When a conductor is placed in an external electric field, what happens to the charges inside the conductor?
So‘rovnoma
  •   They move to the side facing the field
  •   They redistribute evenly throughout the conductor
  •   They move away from the field
  •   They become stationary
250 ta ovoz


The Hall Effect is used to measure:
So‘rovnoma
  •   Resistance
  •   Magnetic field strength
  •   Temperature
  •   Electric field strength
260 ta ovoz


What is the function of the depletion region in a p-n junction?
So‘rovnoma
  •   It enhances conductivity
  •   It prevents the flow of electric current
  •   It increases the resistance
  •   It controls the voltage
240 ta ovoz


The combination of a p-type and an n-type semiconductor forms a:
So‘rovnoma
  •   Bipolar junction transistor
  •   Field-effect transistor
  •   Photoresistor
  •   Light-emitting diode
250 ta ovoz


In an n-type semiconductor, the majority charge carriers are:
So‘rovnoma
  •   Electrons
  •   Holes
  •   Protons
  •   Neutrons
262 ta ovoz


What happens to the resistance of a semiconductor with an increase in temperature?
So‘rovnoma
  •   Increases
  •   Decreases
  •   Remains constant
  •   First increases, then decreases
257 ta ovoz


The process of adding impurities to a pure semiconductor to increase its conductivity is known as:
So‘rovnoma
  •   Doping
  •   Diffusion
  •   Dispersion
  •   Drift
247 ta ovoz


Which of the following is a typical application of a p-n junction diode?
So‘rovnoma
  •   Amplification of signals
  •   Rectification of alternating current
  •   Generation of electromagnetic waves
  •   Detection of radio waves
236 ta ovoz


A body dropped from a height h with initial velocity zero, strikes the ground with a velocity 3 m/s. Another body of same mass dropped from the same height h with an initial velocity of 4 m/s. Final velocity of second mass, with which it strikes ground is
So‘rovnoma
  •   5 m/s
  •   12 m/s
  •   3 m/s
  •   4 m/s
422 ta ovoz


If a car at rest accelerates uniformly to a speed of 144 km/h in 20 s, it covers a distance of
So‘rovnoma
  •   1440 m
  •   2980 m
  •   20 m
  •   400 m
329 ta ovoz

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