JEE Main MCQ & Objective Questions

The JEE Main exam is a crucial step for students aspiring to enter prestigious engineering colleges in India. It tests not only knowledge but also the ability to apply concepts effectively. Practicing MCQs and objective questions is essential for scoring better, as it helps in familiarizing students with the exam pattern and enhances their problem-solving skills. Engaging with practice questions allows students to identify important questions and strengthen their exam preparation.

What You Will Practise Here

  • Fundamental concepts of Physics, Chemistry, and Mathematics
  • Key formulas and their applications in problem-solving
  • Important definitions and theories relevant to JEE Main
  • Diagrams and graphical representations for better understanding
  • Numerical problems and their step-by-step solutions
  • Previous years' JEE Main questions for real exam experience
  • Time management strategies while solving MCQs

Exam Relevance

The topics covered in JEE Main are not only significant for the JEE exam but also appear in various CBSE and State Board examinations. Many concepts are shared with the NEET syllabus, making them relevant across multiple competitive exams. Common question patterns include conceptual applications, numerical problems, and theoretical questions that assess a student's understanding of core subjects.

Common Mistakes Students Make

  • Misinterpreting the question stem, leading to incorrect answers
  • Neglecting units in numerical problems, which can change the outcome
  • Overlooking negative marking and not managing time effectively
  • Relying too heavily on rote memorization instead of understanding concepts
  • Failing to review and analyze mistakes from practice tests

FAQs

Question: How can I improve my speed in solving JEE Main MCQ questions?
Answer: Regular practice with timed quizzes and focusing on shortcuts can significantly enhance your speed.

Question: Are the JEE Main objective questions similar to previous years' papers?
Answer: Yes, many questions are based on previous years' patterns, so practicing them can be beneficial.

Question: What is the best way to approach JEE Main practice questions?
Answer: Start with understanding the concepts, then attempt practice questions, and finally review your answers to learn from mistakes.

Now is the time to take charge of your preparation! Dive into solving JEE Main MCQs and practice questions to test your understanding and boost your confidence for the exam.

Q. A simple harmonic oscillator has a total energy of 50 J. If the amplitude is doubled, what will be the new total energy?
  • A. 50 J
  • B. 100 J
  • C. 200 J
  • D. 400 J
Q. A simple harmonic oscillator has an amplitude A and a maximum speed v_max. What is the relationship between v_max and A?
  • A. v_max = Aω
  • B. v_max = A/ω
  • C. v_max = A²ω
  • D. v_max = A/2ω
Q. A simple harmonic oscillator has an amplitude A. What is the maximum speed of the oscillator?
  • A.
  • B. A/ω
  • C. A²ω
  • D. A/2ω
Q. A simple harmonic oscillator has an amplitude of 5 cm. What is the maximum displacement from the mean position?
  • A. 0 cm
  • B. 2.5 cm
  • C. 5 cm
  • D. 10 cm
Q. A small insect can walk on the surface of water due to which of the following phenomena?
  • A. Viscosity
  • B. Surface tension
  • C. Capillarity
  • D. Buoyancy
Q. A small insect can walk on the surface of water due to which property?
  • A. Viscosity
  • B. Surface tension
  • C. Capillarity
  • D. Density
Q. A small insect can walk on the surface of water without sinking. This is primarily due to:
  • A. Buoyancy
  • B. Surface tension
  • C. Viscosity
  • D. Density
Q. A soap bubble has a radius of 0.1 m. What is the surface area of the bubble?
  • A. 0.04 m²
  • B. 0.12 m²
  • C. 0.25 m²
  • D. 0.31 m²
Q. A soap bubble has a radius of 5 cm. What is the surface area of the bubble?
  • A. 100π cm²
  • B. 50π cm²
  • C. 25π cm²
  • D. 20π cm²
Q. A soap solution is added to water. What happens to the surface tension?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Becomes zero
Q. A soap solution is added to water. What is the effect on the surface tension?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Becomes negative
Q. A solenoid has a length of 1 m and a cross-sectional area of 0.01 m². If the magnetic field inside it is 0.2 T, what is the magnetic flux?
  • A. 0.002 Wb
  • B. 0.01 Wb
  • C. 0.02 Wb
  • D. 0.1 Wb
Q. A solenoid has a length of 1 m and a cross-sectional area of 0.01 m². If the magnetic field inside it is 0.4 T, what is the magnetic flux?
  • A. 0.004 Wb
  • B. 0.04 Wb
  • C. 0.4 Wb
  • D. 0.1 Wb
Q. A solenoid of length L and cross-sectional area A carries a current I. What is the magnetic field inside the solenoid?
  • A. μ₀nI
  • B. μ₀I/n
  • C. μ₀I/(nA)
  • D. μ₀I/(2n)
Q. A solenoid produces a magnetic field when an electric current passes through it. What happens to the magnetic field if the current is reversed?
  • A. The magnetic field disappears
  • B. The magnetic field direction reverses
  • C. The magnetic field strength increases
  • D. The magnetic field strength decreases
Q. A solenoid produces a uniform magnetic field inside it. What factors affect the strength of this magnetic field?
  • A. Length of the solenoid
  • B. Number of turns per unit length
  • C. Current through the solenoid
  • D. All of the above
Q. A solenoid produces a uniform magnetic field inside it. What happens to the magnetic field strength if the current through the solenoid is doubled?
  • A. It remains the same
  • B. It doubles
  • C. It quadruples
  • D. It halves
Q. A solenoid with a length of 1 m and a cross-sectional area of 0.01 m² carries a current of 5 A. If the magnetic field inside the solenoid is uniform, what is the magnetic field strength?
  • A. 0.1 T
  • B. 0.2 T
  • C. 0.5 T
  • D. 1 T
Q. A solid cone rolls down a slope. If its height is h, what is the speed of the cone at the bottom?
  • A. √(gh)
  • B. √(2gh)
  • C. √(3gh)
  • D. √(4gh)
Q. A solid cone rolls down an incline. If its height is h, what is the relationship between its potential energy and kinetic energy at the bottom?
  • A. PE = KE
  • B. PE = 2KE
  • C. PE = 3KE
  • D. PE = 4KE
Q. A solid cone rolls down an incline. What is the moment of inertia about its axis?
  • A. (3/10)mR^2
  • B. (1/10)mR^2
  • C. (1/3)mR^2
  • D. (2/5)mR^2
Q. A solid cylinder and a hollow cylinder of the same mass and radius are released from rest at the same height. Which one will have a greater speed at the bottom?
  • A. Solid cylinder
  • B. Hollow cylinder
  • C. Both have the same speed
  • D. Depends on the mass
Q. A solid cylinder and a hollow cylinder of the same mass and radius roll down the same incline. Which one reaches the bottom first?
  • A. Solid cylinder
  • B. Hollow cylinder
  • C. Both reach at the same time
  • D. Depends on the angle of incline
Q. A solid cylinder of mass M and radius R rolls down an incline of height h. What is its speed at the bottom of the incline?
  • A. √(2gh)
  • B. √(gh)
  • C. √(4gh)
  • D. √(3gh)
Q. A solid cylinder of radius R rolls down a frictionless incline. What is the ratio of its translational kinetic energy to its total kinetic energy at the bottom?
  • A. 1:1
  • B. 2:1
  • C. 1:2
  • D. 3:1
Q. A solid cylinder rolls down an incline of angle θ. What is the ratio of translational kinetic energy to total kinetic energy at the bottom?
  • A. 1/3
  • B. 2/5
  • C. 1/2
  • D. 3/5
Q. A solid cylinder rolls down an incline of height h. What fraction of its total mechanical energy is kinetic energy at the bottom?
  • A. 1/3
  • B. 1/2
  • C. 2/3
  • D. 1
Q. A solid cylinder rolls down an incline of height h. What is the speed of the center of mass at the bottom of the incline?
  • A. √(2gh)
  • B. √(3gh/2)
  • C. √(4gh/3)
  • D. √(5gh/4)
Q. A solid sphere and a hollow sphere of the same mass and radius are released from rest at the same height. Which one reaches the bottom first?
  • A. Solid sphere
  • B. Hollow sphere
  • C. Both reach at the same time
  • D. Depends on the surface
Q. A solid sphere and a hollow sphere of the same mass and radius are released from rest at the same height. Which one will hit the ground first?
  • A. Solid sphere
  • B. Hollow sphere
  • C. Both hit at the same time
  • D. Depends on the mass
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