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. In a parallel circuit with three resistors of values 2Ω, 3Ω, and 6Ω, what is the equivalent resistance?
  • A.
  • B.
  • C.
  • D.
Q. In a parallel circuit with three resistors of values 6 ohms, 3 ohms, and 2 ohms, what is the equivalent resistance?
  • A. 1.5 ohms
  • B. 2 ohms
  • C. 2.5 ohms
  • D. 3 ohms
Q. In a parallel circuit with three resistors R1 = 2Ω, R2 = 3Ω, and R3 = 6Ω, what is the equivalent resistance?
  • A.
  • B.
  • C.
  • D.
Q. In a parallel circuit with two resistors of 4 ohms and 6 ohms, what is the equivalent resistance?
  • A. 2.4 ohms
  • B. 10 ohms
  • C. 24 ohms
  • D. 12 ohms
Q. In a parallel circuit with two resistors of 4 ohms and 6 ohms, what is the total current if the voltage across the circuit is 12V?
  • A. 2 A
  • B. 3 A
  • C. 4 A
  • D. 5 A
Q. In a parallel circuit with two resistors of 4 ohms and 6 ohms, what is the total current if the voltage across the circuit is 12 V?
  • A. 2 A
  • B. 3 A
  • C. 4 A
  • D. 5 A
Q. In a parallel circuit with two resistors of 4Ω and 6Ω, what is the total current if the voltage across the circuit is 12V?
  • A. 2A
  • B. 3A
  • C. 4A
  • D. 6A
Q. In a parallel circuit with two resistors of 6 ohms and 3 ohms, what is the equivalent resistance?
  • A. 2 ohms
  • B. 4 ohms
  • C. 1.5 ohms
  • D. 9 ohms
Q. In a parallel circuit with two resistors R1 = 6Ω and R2 = 3Ω, what is the equivalent resistance?
  • A.
  • B.
  • C. 1.5Ω
  • D.
Q. In a parallel circuit, if one resistor fails, what happens to the total current?
  • A. It increases.
  • B. It decreases.
  • C. It remains the same.
  • D. It becomes zero.
Q. In a parallel circuit, if one resistor is removed, what happens to the total resistance?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Becomes infinite
Q. In a parallel combination of capacitors, how is the total capacitance calculated?
  • A. C_eq = C1 + C2 + C3
  • B. 1/C_eq = 1/C1 + 1/C2 + 1/C3
  • C. C_eq = 1/(C1 + C2 + C3)
  • D. C_eq = C1 * C2 * C3
Q. In a parallel plate capacitor, if the area of the plates is doubled while keeping the separation constant, what happens to the capacitance?
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. In a parallel plate capacitor, if the distance between the plates is doubled while keeping the charge constant, what happens to the electric potential?
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. In a parallel plate capacitor, if the distance between the plates is halved, what happens to the capacitance?
  • A. It halves
  • B. It doubles
  • C. It remains the same
  • D. It quadruples
Q. In a parallel RLC circuit, what happens to the total current if the frequency is increased?
  • A. Increases
  • B. Decreases
  • C. Remains the same
  • D. Depends on R
Q. In a photoelectric effect experiment, increasing the intensity of light increases the number of emitted electrons. What does this imply?
  • A. Light is a wave
  • B. Light is a particle
  • C. Energy of each photon increases
  • D. Number of photons increases
Q. In a photoelectric experiment, if the frequency of light is just above the threshold frequency, what can be said about the emitted electrons?
  • A. They have maximum kinetic energy
  • B. They are emitted with zero kinetic energy
  • C. They are emitted with high kinetic energy
  • D. No electrons are emitted
Q. In a photoelectric experiment, if the stopping potential is increased, what does it indicate about the emitted electrons?
  • A. They have higher kinetic energy
  • B. They have lower kinetic energy
  • C. They are emitted at a lower rate
  • D. They are not emitted
Q. In a photoelectric experiment, if the stopping potential is increased, what happens to the maximum kinetic energy of the emitted electrons?
  • A. It increases
  • B. It decreases
  • C. It remains the same
  • D. It becomes zero
Q. In a photoelectric experiment, if the stopping potential is increased, what happens to the current?
  • A. It increases
  • B. It decreases
  • C. It remains constant
  • D. It becomes zero
Q. In a photoelectric experiment, if the stopping potential is increased, what happens to the energy of the emitted electrons?
  • A. It increases
  • B. It decreases
  • C. It remains the same
  • D. It becomes negative
Q. In a physics experiment, the force applied is measured as 50 N with an uncertainty of ±1 N. What is the relative uncertainty in the force measurement?
  • A. 0.02
  • B. 0.01
  • C. 0.005
  • D. 0.1
Q. In a physics experiment, the speed of an object is measured as 20.0 m/s with an uncertainty of ±0.4 m/s. What is the maximum possible error in the kinetic energy calculated from this speed?
  • A. 8 J
  • B. 4 J
  • C. 2 J
  • D. 1 J
Q. In a plane mirror, if an object is placed 10 cm in front of the mirror, where will the image be formed?
  • A. 5 cm
  • B. 10 cm
  • C. 15 cm
  • D. 20 cm
Q. In a potentiometer circuit, if the balancing length is 50 cm for a cell of emf 1.5V, what is the potential gradient if the total length of the wire is 100 cm?
  • A. 3 V/m
  • B. 1.5 V/m
  • C. 0.75 V/m
  • D. 2 V/m
Q. In a potentiometer circuit, if the length of the wire is doubled while keeping the potential difference constant, what happens to the potential gradient?
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It becomes zero
Q. In a potentiometer circuit, if the length of the wire is doubled, what happens to the potential difference across the wire?
  • A. It doubles.
  • B. It halves.
  • C. It remains the same.
  • D. It quadruples.
Q. In a potentiometer circuit, if the length of the wire is doubled, what happens to the potential gradient?
  • A. It doubles.
  • B. It halves.
  • C. It remains the same.
  • D. It quadruples.
Q. In a potentiometer experiment, if the balance point is found at 4 m for a cell of unknown emf, what is the emf if the potential gradient is 2 V/m?
  • A. 4 V
  • B. 6 V
  • C. 8 V
  • D. 10 V
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