Physics Syllabus (JEE Main)

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Q. A mass is measured as 5.0 kg with an uncertainty of ±0.1 kg. If this mass is used to calculate weight (W = mg), what is the uncertainty in weight if g = 9.8 m/s²?
  • A. ±0.2 N
  • B. ±0.5 N
  • C. ±0.1 N
  • D. ±0.4 N
Q. A mass m is attached to a spring of spring constant k. If the mass is displaced from its equilibrium position and released, what is the time period of the oscillation?
  • A. 2π√(m/k)
  • B. 2π√(k/m)
  • C. π√(m/k)
  • D. π√(k/m)
Q. A mass m is attached to a spring of spring constant k. If the mass is displaced by a distance x from its equilibrium position, what is the restoring force acting on the mass?
  • A. kx
  • B. -kx
  • C. mg
  • D. -mg
Q. A mass m is attached to a spring of spring constant k. What is the angular frequency of the simple harmonic motion?
  • A. √(k/m)
  • B. k/m
  • C. m/k
  • D. 1/√(km)
Q. A mass m is attached to a string and is whirled in a horizontal circle. If the radius of the circle is halved, what happens to the tension in the string if the speed remains constant?
  • A. It doubles
  • B. It remains the same
  • C. It halves
  • D. It quadruples
Q. A mass m is attached to a string and is whirled in a vertical circle. At the highest point of the circle, what is the minimum speed required to keep the mass in circular motion?
  • A. √(g*r)
  • B. g*r
  • C. 2g*r
  • D. g/2
Q. A mass m is attached to a string and is whirled in a vertical circle. At the highest point of the circle, the tension in the string is T. What is the expression for T?
  • A. T = mg
  • B. T = mg - mv²/r
  • C. T = mg + mv²/r
  • D. T = mv²/r
Q. A mass m is attached to a string and is whirled in a vertical circle. At the highest point of the circle, what is the condition for the mass to just complete the circular motion?
  • A. Tension = 0
  • B. Tension = mg
  • C. Tension = 2mg
  • D. Tension = mg/2
Q. A mass m is attached to a string and is whirled in a vertical circle. At the top of the circle, the tension in the string is T. What is the expression for the tension at the bottom of the circle?
  • A. T + mg
  • B. T - mg
  • C. T
  • D. T + 2mg
Q. A mass m is attached to a string of length L and is swung in a vertical circle. At the highest point of the circle, what is the minimum speed required to keep the mass in circular motion?
  • A. √(gL)
  • B. √(2gL)
  • C. gL
  • D. 2gL
Q. A mass m is lifted to a height h in a uniform gravitational field. What is the work done against gravity?
  • A. mgh
  • B. gh
  • C. mg
  • D. 0
Q. A mass on a spring oscillates with a frequency of 2 Hz. What is the angular frequency?
  • A. 4π rad/s
  • B. 2π rad/s
  • C. π rad/s
  • D. 8π rad/s
Q. A mass-spring system is subjected to a periodic force. If the amplitude of oscillation is 0.1 m and the frequency is 2 Hz, what is the maximum velocity of the mass?
  • A. 0.4 m/s
  • B. 0.2 m/s
  • C. 0.1 m/s
  • D. 0.8 m/s
Q. A mass-spring system is subjected to a periodic force. If the amplitude of the forced oscillation is 0.1 m and the damping coefficient is 0.2 kg/s, what is the maximum velocity of the oscillation?
  • A. 0.1 m/s
  • B. 0.2 m/s
  • C. 0.3 m/s
  • D. 0.4 m/s
Q. A mass-spring system oscillates with a frequency of 2 Hz. If the system is damped, what is the relationship between the damped frequency and the natural frequency?
  • A. Damped frequency is greater
  • B. Damped frequency is equal
  • C. Damped frequency is less
  • D. Damped frequency is unpredictable
Q. A mass-spring system oscillates with a frequency of 2 Hz. What is the angular frequency?
  • A. 4π rad/s
  • B. 2π rad/s
  • C. π rad/s
  • D. 8π rad/s
Q. A mass-spring system oscillates with a frequency of 2 Hz. What is the time period of the oscillation?
  • A. 0.5 s
  • B. 1 s
  • C. 2 s
  • D. 4 s
Q. A mass-spring system oscillates with a frequency of 3 Hz. What is the angular frequency?
  • A. 3 rad/s
  • B. 6 rad/s
  • C. 9 rad/s
  • D. 12 rad/s
Q. A mass-spring system oscillates with a frequency of 3 Hz. What is the angular frequency of the system?
  • A. 3 rad/s
  • B. 6 rad/s
  • C. 9 rad/s
  • D. 12 rad/s
Q. A mass-spring system oscillates with a frequency of 3 Hz. What is the period of the oscillation?
  • A. 0.33 s
  • B. 0.5 s
  • C. 1 s
  • D. 2 s
Q. A mass-spring system oscillates with a frequency of 5 Hz. What is the period of the motion?
  • A. 0.2 s
  • B. 0.5 s
  • C. 1 s
  • D. 2 s
Q. A mass-spring system oscillates with a natural frequency of 3 Hz. If a damping force is applied, what is the new frequency of oscillation if the damping ratio is 0.1?
  • A. 2.8 Hz
  • B. 2.9 Hz
  • C. 3.0 Hz
  • D. 3.1 Hz
Q. A mass-spring system oscillates with a period of 2 seconds. What is the frequency of the oscillation?
  • A. 0.25 Hz
  • B. 0.5 Hz
  • C. 1 Hz
  • D. 2 Hz
Q. A mass-spring system oscillates with a period of 4 seconds. What is the frequency of the oscillation?
  • A. 0.25 Hz
  • B. 0.5 Hz
  • C. 1 Hz
  • D. 2 Hz
Q. A material has a bulk modulus of 200 GPa. If the pressure applied to it is increased by 50 MPa, what is the fractional change in volume?
  • A. 0.00025
  • B. 0.0005
  • C. 0.0025
  • D. 0.005
Q. A material has a bulk modulus of 200 GPa. If the pressure on the material is increased by 10 MPa, what is the fractional change in volume?
  • A. 0.00005
  • B. 0.0001
  • C. 0.0002
  • D. 0.00025
Q. A material has a bulk modulus of 200 GPa. What is the change in volume when a pressure of 50 MPa is applied?
  • A. 0.0125%
  • B. 0.025%
  • C. 0.05%
  • D. 0.1%
Q. A material has a Poisson's ratio of 0.3. What is the ratio of lateral strain to longitudinal strain?
  • A. 0.3
  • B. 0.7
  • C. 1.0
  • D. 0.5
Q. A material is said to be elastic if it:
  • A. Returns to its original shape after deformation
  • B. Can be permanently deformed
  • C. Breaks under stress
  • D. Has a high tensile strength
Q. A material is subjected to a tensile stress of 100 MPa and experiences a strain of 0.002. What is its Young's modulus?
  • A. 50 GPa
  • B. 100 GPa
  • C. 200 GPa
  • D. 500 GPa
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