JEE Main

Q. In a series circuit, if one resistor fails (opens), what happens to the current in the circuit?
  • A. It increases
  • B. It decreases
  • C. It becomes zero
  • D. It remains the same
Q. In a series circuit, if one resistor fails open, what happens to the current in the circuit?
  • A. It increases
  • B. It decreases
  • C. It becomes zero
  • D. It remains the same
Q. In a series circuit, if one resistor has a resistance of 5 Ω and another has 10 Ω, what is the total resistance?
  • A. 5 Ω
  • B. 10 Ω
  • C. 15 Ω
  • D. 20 Ω
Q. In a series circuit, if one resistor has a resistivity of 5 Ω·m and another has 10 Ω·m, what is the total resistance?
  • A. 5 Ω
  • B. 10 Ω
  • C. 15 Ω
  • D. 20 Ω
Q. In a series circuit, if one resistor is removed, what happens to the total resistance?
  • A. It increases.
  • B. It decreases.
  • C. It remains the same.
  • D. It becomes zero.
Q. In a series RLC circuit, at resonance, what is the relationship between inductive reactance and capacitive reactance?
  • A. X_L > X_C
  • B. X_L < X_C
  • C. X_L = X_C
  • D. X_L + X_C = 0
Q. In a series RLC circuit, if the resistance is increased, what happens to the bandwidth?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Becomes zero
Q. In a series RLC circuit, if the resistance is increased, what happens to the bandwidth of the resonance peak?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Becomes zero
Q. In a series RLC circuit, if the resistance is increased, what happens to the bandwidth of the resonance?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Becomes zero
Q. In a series RLC circuit, what happens to the current at resonance?
  • A. Maximum
  • B. Minimum
  • C. Zero
  • D. Constant
Q. In a series RLC circuit, what happens to the current when the frequency is increased beyond the resonant frequency?
  • A. Increases
  • B. Decreases
  • C. Remains constant
  • D. Becomes zero
Q. In a series RLC circuit, what is the condition for resonance?
  • A. R = 0
  • B. L = C
  • C. ωL = 1/ωC
  • D. V = I
Q. In a set of numbers, if the mean is 50 and the sum of the numbers is 400, how many numbers are there?
  • A. 6
  • B. 7
  • C. 8
  • D. 9
Q. In a shear stress-strain relationship, what does the slope of the linear portion represent?
  • A. Young's modulus
  • B. Shear modulus
  • C. Bulk modulus
  • D. Tensile strength
Q. In a simple harmonic motion, if the amplitude is halved, how does the total energy change?
  • A. Remains the same
  • B. Halves
  • C. Doubles
  • D. Quadruples
Q. In a simple harmonic motion, if the amplitude is increased, what happens to the total energy of the system?
  • A. It decreases
  • B. It remains the same
  • C. It increases
  • D. It becomes zero
Q. In a simple harmonic motion, if the mass is increased while keeping the spring constant constant, what happens to the period?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Doubles
Q. In a simple harmonic motion, if the mass is increased, what happens to the period?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Depends on the spring constant
Q. In a simple harmonic motion, the maximum displacement from the mean position is called?
  • A. Amplitude
  • B. Frequency
  • C. Wavelength
  • D. Period
Q. In a simple harmonic motion, the maximum displacement from the mean position is called what?
  • A. Amplitude
  • B. Frequency
  • C. Wavelength
  • D. Period
Q. In a simple harmonic motion, the phase difference between displacement and acceleration is:
  • A. 0 degrees
  • B. 90 degrees
  • C. 180 degrees
  • D. 270 degrees
Q. In a simple harmonic motion, the restoring force is directly proportional to what?
  • A. Displacement
  • B. Velocity
  • C. Acceleration
  • D. Mass
Q. In a simple harmonic motion, the restoring force is directly proportional to which of the following?
  • A. Displacement
  • B. Velocity
  • C. Acceleration
  • D. Mass
Q. In a simple harmonic motion, the velocity is maximum at which point?
  • A. Mean position
  • B. Amplitude
  • C. Equilibrium position
  • D. None of the above
Q. In a simple harmonic oscillator, if the maximum speed is 4 m/s and the amplitude is 2 m, what is the angular frequency?
  • A. 2 rad/s
  • B. 4 rad/s
  • C. 6 rad/s
  • D. 8 rad/s
Q. In a single-slit diffraction experiment, what happens to the width of the central maximum as the slit width decreases?
  • A. It increases
  • B. It decreases
  • C. It remains the same
  • D. It becomes zero
Q. In a single-slit diffraction pattern, how does the intensity of the central maximum compare to the first minimum?
  • A. Equal
  • B. Twice
  • C. Four times
  • D. Half
Q. In a single-slit diffraction pattern, how does the intensity of the first minimum compare to the intensity of the central maximum?
  • A. It is equal
  • B. It is half
  • C. It is zero
  • D. It is one-fourth
Q. In a single-slit diffraction pattern, the width of the central maximum is 4 mm. If the slit width is halved, what will be the new width of the central maximum?
  • A. 2 mm
  • B. 4 mm
  • C. 8 mm
  • D. 16 mm
Q. In a single-slit diffraction pattern, what is the angle for the first minimum if the slit width is 0.5 mm and the wavelength of light is 600 nm?
  • A. 30°
  • B. 60°
  • C. 45°
  • D. 15°
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