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. What is the length of the latus rectum of the ellipse x^2/36 + y^2/16 = 1?
  • A. 8/3
  • B. 12
  • C. 16/3
  • D. 24
Q. What is the length of the latus rectum of the ellipse x^2/a^2 + y^2/b^2 = 1?
  • A. 2b^2/a
  • B. 2a^2/b
  • C. 2a
  • D. 2b
Q. What is the length of the latus rectum of the parabola y^2 = 12x?
  • A. 3
  • B. 6
  • C. 12
  • D. 24
Q. What is the length of the latus rectum of the parabola y^2 = 4ax?
  • A. 2a
  • B. 4a
  • C. a
  • D. None of the above
Q. What is the length of the latus rectum of the parabola y^2 = 8x?
  • A. 4
  • B. 8
  • C. 2
  • D. 16
Q. What is the length of the line segment joining the points (-1, -1) and (2, 3)?
  • A. 3
  • B. 4
  • C. 5
  • D. 6
Q. What is the length of the line segment joining the points (1, 2) and (1, 5)?
  • A. 3
  • B. 4
  • C. 2
  • D. 5
Q. What is the length of the median from vertex A to side BC in triangle ABC with sides a = 6, b = 8, c = 10?
  • A. 5
  • B. 6
  • C. 7
  • D. 8
Q. What is the length of the segment of the line 3x + 4y = 12 between the x-axis and y-axis?
  • A. 5
  • B. 6
  • C. 7
  • D. 8
Q. What is the limit of (1/x) as x approaches infinity?
  • A. 0
  • B. 1
  • C. Infinity
  • D. -Infinity
Q. What is the limit of (x^2 - 1)/(x - 1) as x approaches 1?
  • A. 0
  • B. 1
  • C. 2
  • D. Infinity
Q. What is the limit of f(x) = 1/x as x approaches 0 from the right?
  • A. 0
  • B. Infinity
  • C. 1
  • D. Does not exist
Q. What is the limiting reagent when 3 moles of A react with 2 moles of B to produce 4 moles of C?
  • A. A
  • B. B
  • C. C
  • D. None
Q. What is the limiting reagent when 5 moles of A react with 3 moles of B in the reaction A + 2B → C?
  • A. A
  • B. B
  • C. C
  • D. None
Q. What is the magnetic field at a distance r from an infinitely long straight wire carrying current I?
  • A. μ₀I/2πr
  • B. μ₀I/4πr
  • C. μ₀I/πr
  • D. 0
Q. What is the magnetic field at a point due to a long straight current-carrying conductor using Biot-Savart Law?
  • A. μ₀I/(2πr)
  • B. μ₀I/(4πr²)
  • C. μ₀I/(2r)
  • D. μ₀I/(4r)
Q. What is the magnetic field at a point on the axis of a circular loop of radius R carrying a current I at a distance x from the center?
  • A. (μ₀I)/(2R) * (R²/(R²+x²)^(3/2))
  • B. (μ₀I)/(4R) * (R²/(R²+x²)^(3/2))
  • C. (μ₀I)/(2R) * (1/(R²+x²)^(3/2))
  • D. (μ₀I)/(4R) * (1/(R²+x²)^(3/2))
Q. What is the magnetic field at a point on the axis of a circular loop of radius R carrying current I?
  • A. μ₀I/(2R)
  • B. μ₀I/(4R)
  • C. μ₀I/(2R²)
  • D. μ₀I/(2√2R)
Q. What is the magnetic field at the center of a circular loop of radius R carrying a current I?
  • A. μ₀I/(2R)
  • B. μ₀I/(4R)
  • C. μ₀I/(R)
  • D. μ₀I/(8R)
Q. What is the magnetic field at the center of a circular loop of radius R carrying current I?
  • A. μ₀I/2R
  • B. μ₀I/R
  • C. μ₀I/4R
  • D. μ₀I/πR
Q. What is the magnetic field at the center of a square loop of side a carrying current I?
  • A. μ₀I/4a
  • B. μ₀I/2a
  • C. μ₀I/a
  • D. μ₀I/8a
Q. What is the magnetic field at the midpoint of a wire carrying current I in opposite directions?
  • A. Zero
  • B. μ₀I/2
  • C. μ₀I
  • D. Depends on distance
Q. What is the magnetic field due to a circular loop of radius R carrying current I at a point on its axis at a distance x from the center?
  • A. μ₀I/(2R)
  • B. μ₀I/(2(x² + R²)^(3/2))
  • C. μ₀I/(4πR)
  • D. μ₀I/(x² + R²)
Q. What is the magnetic field due to a current I flowing through a straight wire at a distance d?
  • A. μ₀I/(2πd)
  • B. μ₀I/(4πd²)
  • C. μ₀I/(d)
  • D. μ₀I/(2d)
Q. What is the magnetic field due to a current loop at a point on its axis?
  • A. μ₀I/2R
  • B. μ₀I/4R
  • C. μ₀I/2R²
  • D. μ₀I/4R²
Q. What is the magnetic field due to a long straight wire carrying current I at a distance r from the wire?
  • A. μ₀I/2πr
  • B. μ₀I/4πr
  • C. μ₀I/πr
  • D. μ₀I/8πr
Q. What is the magnetic field due to a magnetic dipole at a point along its axial line?
  • A. (μ₀/4π) * (2m/r³)
  • B. (μ₀/4π) * (m/r³)
  • C. (μ₀/4π) * (m/r²)
  • D. (μ₀/4π) * (m/r⁴)
Q. What is the magnetic field due to a solenoid of length L, carrying n turns per unit length and current I?
  • A. μ₀nI
  • B. μ₀nI/L
  • C. μ₀nI/2
  • D. μ₀nI/L²
Q. What is the magnetic field due to a straight conductor at a point 1 meter away carrying a current of 5 A?
  • A. 0.01 T
  • B. 0.02 T
  • C. 0.03 T
  • D. 0.04 T
Q. What is the magnetic field due to a straight wire at a distance of 0.5 m carrying a current of 10 A?
  • A. 0.4 μT
  • B. 0.2 μT
  • C. 0.1 μT
  • D. 0.8 μT
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