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. If a long straight wire carries a current I, what is the direction of the magnetic field at a point located directly above the wire?
  • A. Towards the wire
  • B. Away from the wire
  • C. Clockwise around the wire
  • D. Counterclockwise around the wire
Q. If a long straight wire carries a current I, what is the magnetic field at a distance r from the wire according to Ampere's Law?
  • A. μ₀I/(2πr)
  • B. μ₀I/(4πr²)
  • C. I/(2πr)
  • D. μ₀I/(r)
Q. If a long straight wire carries a current I, what is the magnetic field at a distance r from the wire according to the Biot-Savart Law?
  • A. μ₀I/(2πr)
  • B. μ₀I/(4πr^2)
  • C. μ₀I/(2r)
  • D. μ₀I/(4πr)
Q. If a long straight wire carries a current I, what is the magnetic field B at a distance r from the wire?
  • A. B = μ₀I/(2πr)
  • B. B = μ₀I/(4πr^2)
  • C. B = μ₀I/(2r)
  • D. B = μ₀I/(πr^2)
Q. If a long straight wire carries a current I, what is the magnetic field B at a distance r from the wire according to the Biot-Savart Law?
  • A. B = (μ₀I)/(2πr)
  • B. B = (μ₀I)/(4πr²)
  • C. B = (μ₀I)/(r)
  • D. B = (μ₀I)/(2r)
Q. If a machine does 200 J of work in 5 seconds, what is its power output?
  • A. 20 W
  • B. 40 W
  • C. 50 W
  • D. 60 W
Q. If a machine does 2000 J of work in 5 seconds, what is its power output?
  • A. 200 W
  • B. 400 W
  • C. 500 W
  • D. 600 W
Q. If a machine does 500 J of work in 10 seconds, what is its power output?
  • A. 50 W
  • B. 100 W
  • C. 200 W
  • D. 500 W
Q. If a machine does 500 J of work in 10 seconds, what is its power?
  • A. 50 W
  • B. 100 W
  • C. 200 W
  • D. 500 W
Q. If a machine does 500 Joules of work in 10 seconds, what is its power output?
  • A. 50 Watts
  • B. 100 Watts
  • C. 200 Watts
  • D. 500 Watts
Q. If a machine has an efficiency of 80% and it consumes 1000 J of energy, what is the useful work output?
  • A. 800 J
  • B. 1000 J
  • C. 200 J
  • D. 600 J
Q. If a magnetic field is applied perpendicular to a loop of wire, what is the effect on the induced EMF?
  • A. It is maximum
  • B. It is minimum
  • C. It is zero
  • D. It fluctuates
Q. If a magnetic field is directed into the page and a positive charge moves to the right, what is the direction of the magnetic force acting on the charge?
  • A. Into the page
  • B. Out of the page
  • C. Upward
  • D. Downward
Q. If a magnetic field of 0.1 T is perpendicular to a circular loop of radius 0.1 m, what is the magnetic flux through the loop?
  • A. 0.01 Wb
  • B. 0.03 Wb
  • C. 0.1 Wb
  • D. 0.05 Wb
Q. If a mass is measured as 75 kg with an error of 0.5 kg, what is the minimum possible mass?
  • A. 74.5 kg
  • B. 75 kg
  • C. 75.5 kg
  • D. 76 kg
Q. If a material exhibits a linear stress-strain relationship, what type of material is it likely to be?
  • A. Brittle material
  • B. Ductile material
  • C. Elastic material
  • D. Plastic material
Q. If a material exhibits plastic deformation, which of the following is true?
  • A. It returns to its original shape after the load is removed
  • B. It does not return to its original shape after the load is removed
  • C. It behaves like a perfect elastic material
  • D. It has a very high Young's modulus
Q. If a material has a high shear modulus, what does it imply about the material?
  • A. It is very flexible
  • B. It is very stiff against shear forces
  • C. It is very brittle
  • D. It is very ductile
Q. If a material has a Poisson's ratio of 0.3, what does this imply about its behavior under stress?
  • A. It expands laterally
  • B. It contracts laterally
  • C. It does not change shape
  • D. It becomes brittle
Q. If a material has a Poisson's ratio of 0.3, what does this imply about its lateral strain when subjected to axial strain?
  • A. Lateral strain is equal to axial strain
  • B. Lateral strain is 0.3 times the axial strain
  • C. Lateral strain is 3 times the axial strain
  • D. Lateral strain is independent of axial strain
Q. If a material has a Poisson's ratio of 0.3, what does this imply?
  • A. It expands laterally when stretched
  • B. It contracts laterally when stretched
  • C. It has no lateral strain
  • D. It is incompressible
Q. If a material has a Young's modulus of 200 GPa, what does this indicate?
  • A. It is very elastic
  • B. It is very brittle
  • C. It is very ductile
  • D. It is very plastic
Q. If a material is stretched beyond its elastic limit, what happens?
  • A. It returns to its original shape
  • B. It undergoes permanent deformation
  • C. It becomes stronger
  • D. It becomes weaker
Q. If a measurement is recorded as 0.004560, how many significant figures does it have?
  • A. 3
  • B. 4
  • C. 5
  • D. 6
Q. If a measurement is recorded as 0.00780 m, how many significant figures does it have?
  • A. 2
  • B. 3
  • C. 4
  • D. 5
Q. If a measurement is recorded as 0.00780, how many significant figures does it contain?
  • A. 2
  • B. 3
  • C. 4
  • D. 5
Q. If a measurement is recorded as 0.007890, how many significant figures does it have?
  • A. 3
  • B. 4
  • C. 5
  • D. 6
Q. If a measurement is recorded as 1500 m, how many significant figures does it have?
  • A. 2
  • B. 3
  • C. 4
  • D. 1
Q. If a measurement is recorded as 1500 with no decimal point, how many significant figures does it have?
  • A. 2
  • B. 3
  • C. 4
  • D. 1
Q. If a measurement of time is recorded as 15.0 s with an uncertainty of ±0.5 s, what is the total time range?
  • A. 14.5 s to 15.5 s
  • B. 15.0 s to 16.0 s
  • C. 14.0 s to 15.0 s
  • D. 15.0 s to 15.5 s
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