Physics Syllabus (JEE Main)

Q. In an ideal gas, the pressure is directly proportional to which of the following?
  • A. Volume
  • B. Temperature
  • C. Number of moles
  • D. Density
Q. In an ideal gas, the root mean square speed of the gas molecules is given by which of the following formulas?
  • A. v_rms = √(3RT/M)
  • B. v_rms = √(RT/M)
  • C. v_rms = √(2RT/M)
  • D. v_rms = √(R/M)
Q. In an ideal gas, the volume occupied by the gas molecules is:
  • A. Negligible compared to the total volume
  • B. Equal to the total volume
  • C. Greater than the total volume
  • D. None of the above
Q. In an ideal gas, which of the following quantities is constant during an isothermal process?
  • A. Pressure.
  • B. Volume.
  • C. Temperature.
  • D. Number of moles.
Q. In an isochoric process, the volume of the system:
  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Varies with temperature
Q. In an isochoric process, what happens to the internal energy of a gas when heat is added?
  • A. It decreases
  • B. It remains constant
  • C. It increases
  • D. It depends on the gas
Q. In an isochoric process, what happens to the internal energy of an ideal gas when heat is added?
  • A. It decreases.
  • B. It remains constant.
  • C. It increases.
  • D. It depends on the amount of heat added.
Q. In an isothermal process for an ideal gas, which of the following is true?
  • A. The internal energy remains constant.
  • B. The temperature increases.
  • C. The pressure decreases.
  • D. The volume remains constant.
Q. In an isothermal process, how does the internal energy of an ideal gas change?
  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Depends on the amount of gas
Q. In an isothermal process, the change in internal energy is:
  • A. Positive
  • B. Negative
  • C. Zero
  • D. Depends on the system
Q. In an isothermal process, the change in internal energy of an ideal gas is:
  • A. Positive
  • B. Negative
  • C. Zero
  • D. Depends on the amount of gas
Q. In an isothermal process, the internal energy of an ideal gas:
  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Depends on the amount of gas
Q. In an isothermal process, the temperature of the system remains constant. What is the work done by the gas?
  • A. Zero
  • B. nRT ln(Vf/Vi)
  • C. nRT
  • D. nR(Tf - Ti)
Q. In an isothermal process, the temperature of the system:
  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Varies linearly
Q. In an isothermal process, which of the following remains constant?
  • A. Pressure
  • B. Volume
  • C. Temperature
  • D. Number of moles
Q. In an RL circuit, what is the time constant τ defined as?
  • A. L/R
  • B. R/L
  • C. LR
  • D. 1/(LR)
Q. In an RL circuit, what is the time constant τ?
  • A. L/R
  • B. R/L
  • C. LR
  • D. 1/(LR)
Q. In an RLC circuit, if the resistance is increased while keeping the inductance and capacitance constant, what happens to the bandwidth?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Becomes zero
Q. In an RLC circuit, what is the condition for resonance?
  • A. XL = XC
  • B. R = 0
  • C. L = C
  • D. f = 0
Q. In an RLC series circuit, if the resistance is increased while keeping the inductance and capacitance constant, what happens to the quality factor (Q)?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Becomes zero
Q. In an RLC series circuit, what is the condition for resonance?
  • A. XL = XC
  • B. R = 0
  • C. XL > XC
  • D. R > XL
Q. In beta decay, which particle is emitted from the nucleus?
  • A. Alpha particle
  • B. Beta particle
  • C. Gamma ray
  • D. Neutron
Q. In Biot-Savart Law, what does the term 'dL' represent?
  • A. Element of current
  • B. Element of length
  • C. Element of magnetic field
  • D. Element of charge
Q. In digital communication, what does the term 'bit rate' refer to?
  • A. The number of bits transmitted per second
  • B. The number of bits stored in a device
  • C. The number of bits in a signal
  • D. The number of bits required for modulation
Q. In double-slit diffraction, what is the effect of increasing the distance between the slits on the fringe width?
  • A. Fringe width increases
  • B. Fringe width decreases
  • C. Fringe width remains constant
  • D. Fringe width becomes zero
Q. In double-slit diffraction, what is the path difference for constructive interference at the first order maximum?
  • A. λ/2
  • B. λ
  • C.
  • D.
Q. In electromagnetic induction, what is the role of the changing magnetic field?
  • A. It creates a static electric field
  • B. It induces a current in a conductor
  • C. It has no effect
  • D. It increases resistance
Q. In electrostatics, what is the significance of equipotential surfaces?
  • A. They are surfaces where electric field is zero
  • B. They are surfaces where potential is constant
  • C. They are surfaces where charge density is uniform
  • D. They are surfaces where current flows
Q. In forced oscillations, what is the effect of increasing the amplitude of the driving force?
  • A. Decreases the amplitude of oscillation
  • B. Increases the amplitude of oscillation
  • C. Has no effect on amplitude
  • D. Causes the system to stop oscillating
Q. In forced oscillations, what is the phase difference between the driving force and the displacement at resonance?
  • A. 0 degrees
  • B. 90 degrees
  • C. 180 degrees
  • D. 270 degrees
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