JEE Main Preparation Resources for Competitive Exams

My Learning Cart

JEE Main

Download Q&A

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.

Chemistry Syllabus (JEE Main) Mathematics Syllabus (JEE Main) Physics Syllabus (JEE Main)

Q. If two forces of 5 N and 10 N act in the same direction on an object, what is the net force?

A. 15 N
B. 5 N
C. 10 N
D. 0 N

Solution

Net force = 5 N + 10 N = 15 N.

Correct Answer: A — 15 N

Q. If two forces of 5 N and 10 N are applied at the same distance from a pivot, which force produces more torque?

A. 5 N
B. 10 N
C. Both produce the same torque
D. It depends on the angle of application

Solution

Torque is directly proportional to the force applied; hence, the 10 N force produces more torque.

Correct Answer: B — 10 N

Q. If two forces of equal magnitude are applied at different distances from a pivot, which will produce a greater torque?

A. The force applied further away
B. The force applied closer
C. Both produce equal torque
D. It depends on the angle

Solution

Torque is greater when the force is applied further away from the pivot, given equal magnitudes.

Correct Answer: A — The force applied further away

Q. If two forces of equal magnitude are applied at opposite ends of a lever arm, what is the net torque about the center?

A. Zero
B. Equal to the force
C. Twice the force
D. Depends on the distance

Solution

The net torque is zero because the torques produced by the two forces cancel each other out.

Correct Answer: A — Zero

Q. If two identical charges are brought closer together, what happens to the potential energy of the system?

A. Increases
B. Decreases
C. Remains the same
D. Becomes zero

Solution

As the charges are brought closer, the potential energy of the system increases due to the repulsive force between like charges.

Correct Answer: A — Increases

Q. If two identical charges are placed 1 meter apart, what happens to the force between them if the distance is doubled?

A. It doubles
B. It halves
C. It remains the same
D. It quadruples

Solution

According to Coulomb's law, force is inversely proportional to the square of the distance. If the distance is doubled, the force becomes one-fourth.

Correct Answer: B — It halves

Q. If two identical charges are placed 1m apart, what is the electric field at a point midway between them?

A. 0 N/C
B. kq/2
C. kq
D. 2kq

Solution

The electric fields due to both charges at the midpoint cancel each other, resulting in a net electric field of 0.

Correct Answer: A — 0 N/C

Q. If two identical charges are placed at a distance of 1m apart, what is the electric field at a point midway between them?

A. 0 N/C
B. kq/2
C. kq
D. kq/4

Solution

The electric fields due to both charges at the midpoint cancel each other, resulting in a net electric field of 0 N/C.

Correct Answer: A — 0 N/C

Q. If two identical charges are placed at a distance of 1m, what is the potential energy of the system?

A. 0.5 J
B. 1 J
C. 2 J
D. 4 J

Solution

Potential energy U = k * q1 * q2 / r = (9 × 10^9 N m²/C²) * (q²) / 1m. For q = 1μC, U = 1 J.

Correct Answer: B — 1 J

Q. If two identical disks are stacked on top of each other, what is the moment of inertia about the axis of the bottom disk?

A. MR^2
B. 2MR^2
C. 1/2 MR^2
D. 4MR^2

Solution

The moment of inertia of the bottom disk is MR^2, and the top disk contributes an additional MR^2 due to the parallel axis theorem, giving a total of 2MR^2.

Correct Answer: B — 2MR^2

Q. If two objects are in thermal contact, what will happen to their temperatures over time?

A. They will remain the same
B. They will equalize
C. One will increase, the other will decrease
D. They will both decrease

Solution

According to the second law of thermodynamics, heat will flow from the hotter object to the cooler one until they reach thermal equilibrium.

Correct Answer: B — They will equalize

Q. If two objects are moved closer together, what happens to the gravitational force between them?

A. It decreases
B. It increases
C. It remains constant
D. It becomes zero

Solution

As the distance between two masses decreases, the gravitational force increases according to the inverse square law.

Correct Answer: B — It increases

Q. If two objects are moved to a distance of half their original separation, how does the gravitational force change?

A. It becomes four times stronger
B. It becomes twice stronger
C. It remains the same
D. It becomes half as strong

Solution

If the distance is halved, the force becomes 1/(1/2)^2 = 4 times stronger.

Correct Answer: A — It becomes four times stronger

Q. If two objects are moving in opposite directions with speeds of 10 m/s and 15 m/s, what is their relative speed?

A. 5 m/s
B. 25 m/s
C. 15 m/s
D. 10 m/s

Solution

Relative speed = Speed of object 1 + Speed of object 2 = 10 m/s + 15 m/s = 25 m/s.

Correct Answer: B — 25 m/s

Q. If two objects are moving in opposite directions with speeds of 20 m/s and 30 m/s, what is their relative velocity?

A. 10 m/s
B. 50 m/s
C. 20 m/s
D. 30 m/s

Solution

Relative velocity = Speed of object 1 + Speed of object 2 = 20 m/s + 30 m/s = 50 m/s.

Correct Answer: B — 50 m/s

Q. If two objects are moving in opposite directions with speeds of 40 m/s and 60 m/s, what is their relative speed?

A. 20 m/s
B. 40 m/s
C. 60 m/s
D. 100 m/s

Solution

Relative speed = Speed of object 1 + Speed of object 2 = 40 m/s + 60 m/s = 100 m/s.

Correct Answer: D — 100 m/s

Q. If two objects are moving towards each other with speeds of 40 m/s and 60 m/s, how long will it take for them to collide if they are 200 m apart?

A. 1 s
B. 2 s
C. 3 s
D. 4 s

Solution

Relative speed = 40 m/s + 60 m/s = 100 m/s. Time = Distance / Relative speed = 200 m / 100 m/s = 2 s.

Correct Answer: B — 2 s

Q. If two objects are placed at a distance of 1 m apart, what is the gravitational force between them if both have a mass of 1 kg?

A. 6.67 x 10^-11 N
B. 9.8 x 10^-11 N
C. 1.67 x 10^-11 N
D. 0 N

Solution

F = G * (m1 * m2) / r^2 = (6.67 x 10^-11) * (1 * 1) / (1^2) = 6.67 x 10^-11 N.

Correct Answer: A — 6.67 x 10^-11 N

Q. If two objects are placed in space, how does the gravitational force between them change if the distance is halved?

A. It becomes half
B. It becomes double
C. It becomes four times stronger
D. It remains the same

Solution

If the distance is halved, the gravitational force increases by a factor of four, as it is inversely proportional to the square of the distance.

Correct Answer: C — It becomes four times stronger

Q. If two objects of masses 3 kg and 5 kg collide elastically, what is the final velocity of the 3 kg object if it was initially at rest and the 5 kg object was moving at 10 m/s?

A. 0 m/s
B. 3 m/s
C. 5 m/s
D. 10 m/s

Solution

Using conservation of momentum and kinetic energy, the final velocity of the 3 kg object can be calculated to be 3 m/s.

Correct Answer: B — 3 m/s

Q. If two parallel wires carry currents in the same direction, what is the interaction between the magnetic fields they produce?

A. They repel each other
B. They attract each other
C. No interaction
D. They cancel each other out

Solution

Two parallel wires carrying currents in the same direction will attract each other due to the magnetic fields they produce.

Correct Answer: B — They attract each other

Q. If two parallel wires carry currents in the same direction, what is the nature of the force between them?

A. Attractive
B. Repulsive
C. No force
D. Depends on the distance

Solution

Two parallel wires carrying currents in the same direction experience an attractive force between them.

Correct Answer: A — Attractive

Q. If two point charges are brought closer together, what happens to the electric potential energy of the system?

A. Increases
B. Decreases
C. Remains the same
D. Becomes zero

Solution

The electric potential energy increases as the charges are brought closer together if they are of the same sign.

Correct Answer: A — Increases

Q. If two polarizers are oriented at 90 degrees to each other, what will be the intensity of light passing through them?

A. Maximum intensity
B. Half of the original intensity
C. Zero intensity
D. The same as the first polarizer

Solution

When two polarizers are oriented at 90 degrees to each other, no light can pass through, resulting in zero intensity.

Correct Answer: C — Zero intensity

Q. If two polarizers are placed at 90 degrees to each other, what will be the intensity of light passing through them?

A. Equal to the intensity of the first polarizer
B. Half of the intensity of the first polarizer
C. Zero
D. Equal to the intensity of the second polarizer

Solution

When two polarizers are oriented at 90 degrees to each other, no light passes through, resulting in zero intensity.

Correct Answer: C — Zero

Q. If two polarizers are placed in series with their axes at 90 degrees to each other, what will be the intensity of light passing through?

A. It will be maximum
B. It will be minimum
C. It will be half of the original intensity
D. It will be one-fourth of the original intensity

Solution

When two polarizers are at 90 degrees to each other, no light passes through, resulting in minimum intensity.

Correct Answer: B — It will be minimum

Q. If two resistors of 4 ohms and 6 ohms are connected in parallel, what is the current through the 4 ohm resistor when a 12V battery is connected?

A. 3 A
B. 2 A
C. 1 A
D. 4 A

Solution

Using Ohm's law, I = V/R, for the 4 ohm resistor, I = 12V / 4 ohms = 3 A.

Correct Answer: A — 3 A

Q. If two resistors of 4 ohms and 6 ohms are connected in series, what is the voltage drop across the 4 ohm resistor when a current of 2 A flows through the circuit?

A. 8 V
B. 4 V
C. 2 V
D. 6 V

Solution

Using Ohm's law, V = I * R, the voltage drop across the 4 ohm resistor is V = 2 A * 4 ohms = 8 V.

Correct Answer: A — 8 V

Q. If two resistors of resistivity 5 x 10^-6 Ω·m are connected in series, what is the total resistivity?

A. 5 x 10^-6 Ω·m
B. 10 x 10^-6 Ω·m
C. 2.5 x 10^-6 Ω·m
D. None of the above

Solution

Resistivity is a property of the material, not the configuration; it remains 5 x 10^-6 Ω·m.

Correct Answer: A — 5 x 10^-6 Ω·m

Q. If two resistors of resistivity 5 Ω·m and 10 Ω·m are connected in series, what is the total resistance?

A. 15 Ω
B. 5 Ω
C. 10 Ω
D. 20 Ω

Solution

Total resistance in series is the sum: R_total = R1 + R2 = 5 + 10 = 15 Ω.

Correct Answer: A — 15 Ω

Showing 4231 to 4260 of 10700 (357 Pages)

School

College

Degree

Competitve

Skills

Soulshift Feedback ×

On a scale of 0–10, how likely are you to recommend The Soulshift Academy?

Not likely Very likely