Q. What is the total current flowing through a junction where 5A enters and 3A and 2A leave?
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Solution
According to Kirchhoff's Current Law, the total current entering a junction equals the total current leaving. Here, 5A = 3A + 2A.
Correct Answer:
A
— 0A
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Q. What is the total current in a circuit with a 10V battery and two 5 ohm resistors in parallel?
A.
1 A
B.
2 A
C.
3 A
D.
4 A
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Solution
Equivalent resistance R_eq = 1/(1/5 + 1/5) = 2.5 ohms. Total current I = V/R_eq = 10V / 2.5Ω = 4 A.
Correct Answer:
B
— 2 A
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Q. What is the total current in a circuit with a 12V battery and a total resistance of 3 ohms?
A.
4 A
B.
2 A
C.
3 A
D.
1 A
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Solution
Using Ohm's law, I = V/R, we have I = 12V / 3 ohms = 4 A.
Correct Answer:
A
— 4 A
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Q. What is the total current in a circuit with a 12V battery and three 4 ohm resistors connected in series?
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Solution
Total resistance R_total = 4 + 4 + 4 = 12 ohms. Current I = V/R_total = 12V / 12 ohms = 1A.
Correct Answer:
B
— 2A
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Q. What is the total current in a circuit with a 12V battery and three resistors (R1 = 4Ω, R2 = 4Ω, R3 = 4Ω) connected in parallel?
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Solution
Total resistance R_eq = 1 / (1/R1 + 1/R2 + 1/R3) = 1 / (1/4 + 1/4 + 1/4) = 1.33Ω. Current I = V / R_eq = 12V / 1.33Ω ≈ 9A.
Correct Answer:
B
— 4A
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Q. What is the total current in a circuit with a 12V battery and two 4 ohm resistors in series?
A.
1 A
B.
2 A
C.
3 A
D.
4 A
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Solution
Total resistance R = R1 + R2 = 4 + 4 = 8 ohms. Current I = V/R = 12V / 8 ohms = 1.5 A.
Correct Answer:
B
— 2 A
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Q. What is the total current in a circuit with a 24V battery and three resistors (2Ω, 4Ω, and 6Ω) connected in series?
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Solution
Total resistance R = R1 + R2 + R3 = 2Ω + 4Ω + 6Ω = 12Ω. Using Ohm's law, I = V/R = 24V / 12Ω = 2A.
Correct Answer:
B
— 3A
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Q. What is the total current in a circuit with a 9V battery and a 3Ω resistor?
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Solution
Using Ohm's law, I = V/R = 9V/3Ω = 3A.
Correct Answer:
B
— 2A
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Q. What is the total current in a circuit with a 9V battery and two 3Ω resistors in parallel?
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Solution
Total resistance R = 1/(1/3 + 1/3) = 1.5Ω; I = V/R = 9V/1.5Ω = 6A.
Correct Answer:
B
— 2A
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Q. What is the total current in a circuit with two branches, one carrying 2 A and the other 3 A?
A.
5 A
B.
6 A
C.
1 A
D.
0 A
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Solution
In a parallel circuit, the total current is the sum of the currents in each branch: I_total = I1 + I2 = 2 A + 3 A = 5 A.
Correct Answer:
A
— 5 A
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Q. What is the total electric flux through a closed surface surrounding a charge of -3Q?
A.
-3Q/ε₀
B.
3Q/ε₀
C.
0
D.
-Q/ε₀
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Solution
The total electric flux through a closed surface is given by Φ = Q_enc/ε₀, where Q_enc is the enclosed charge.
Correct Answer:
A
— -3Q/ε₀
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Q. What is the total energy stored in an inductor with inductance L carrying a current I?
A.
LI^2
B.
0.5LI^2
C.
I^2/L
D.
0.5I^2/L
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Solution
The energy stored in an inductor is given by U = 0.5LI^2.
Correct Answer:
B
— 0.5LI^2
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Q. What is the total number of orbitals in the n=2 energy level?
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Solution
The total number of orbitals in an energy level is given by n^2. For n=2, it is 2^2 = 4.
Correct Answer:
B
— 4
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Q. What is the total number of orbitals in the n=4 energy level?
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Solution
The total number of orbitals in an energy level is given by n^2. For n=4, it is 4^2 = 16.
Correct Answer:
C
— 16
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Q. What is the total power consumed in a circuit with a 12V battery and a 4Ω resistor?
A.
12W
B.
24W
C.
36W
D.
48W
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Solution
Power P = V^2/R = (12V)^2/4Ω = 36W.
Correct Answer:
B
— 24W
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Q. What is the total power consumed in a circuit with a current of 5A and a total resistance of 4Ω?
A.
10W
B.
20W
C.
30W
D.
40W
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Solution
Power (P) = I^2 * R = 5^2 * 4 = 25 * 4 = 100W.
Correct Answer:
D
— 40W
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Q. What is the total power of two lenses of power +5 D and -3 D placed in contact?
A.
2 D
B.
8 D
C.
15 D
D.
1 D
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Solution
Total power P = P1 + P2 = 5 D - 3 D = 2 D.
Correct Answer:
A
— 2 D
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Q. What is the total resistance in a circuit with a 10Ω resistor in series with a 5Ω resistor?
A.
5Ω
B.
10Ω
C.
15Ω
D.
50Ω
Show solution
Solution
In series, total resistance (R_total) = R1 + R2 = 10Ω + 5Ω = 15Ω.
Correct Answer:
C
— 15Ω
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Q. What is the total resistance in a circuit with a 12 ohm and a 4 ohm resistor connected in parallel?
A.
3 ohms
B.
4 ohms
C.
9 ohms
D.
16 ohms
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Solution
1/R_eq = 1/12 + 1/4 => R_eq = 3 ohms.
Correct Answer:
A
— 3 ohms
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Q. What is the total resistance in a circuit with a 12Ω resistor and a 4Ω resistor connected in series?
A.
16Ω
B.
48Ω
C.
3Ω
D.
8Ω
Show solution
Solution
In series, total resistance R_total = R1 + R2 = 12Ω + 4Ω = 16Ω.
Correct Answer:
A
— 16Ω
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Q. What is the total resistance of a circuit with a 3Ω and a 5Ω resistor in series?
A.
8Ω
B.
15Ω
C.
2Ω
D.
1.5Ω
Show solution
Solution
Total resistance R = R1 + R2 = 3Ω + 5Ω = 8Ω.
Correct Answer:
A
— 8Ω
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Q. What is the total resistance of two 10 ohm resistors connected in parallel?
A.
5 ohms
B.
10 ohms
C.
20 ohms
D.
15 ohms
Show solution
Solution
1/R_eq = 1/R1 + 1/R2 = 1/10 + 1/10 = 2/10. Thus, R_eq = 10/2 = 5 ohms.
Correct Answer:
A
— 5 ohms
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Q. What is the total resistance of two 10 ohm resistors connected in series?
A.
5 ohms
B.
10 ohms
C.
20 ohms
D.
15 ohms
Show solution
Solution
In series, R_eq = R1 + R2 = 10 + 10 = 20 ohms.
Correct Answer:
C
— 20 ohms
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Q. What is the total resistance of two 12 ohm resistors connected in parallel?
A.
6 ohms
B.
12 ohms
C.
24 ohms
D.
18 ohms
Show solution
Solution
1/R_eq = 1/R1 + 1/R2 = 1/12 + 1/12 = 2/12. Thus, R_eq = 12/2 = 6 ohms.
Correct Answer:
A
— 6 ohms
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Q. What is the total resistance of two 8Ω resistors connected in series?
A.
8Ω
B.
16Ω
C.
4Ω
D.
12Ω
Show solution
Solution
In series, R_eq = R1 + R2 = 8 + 8 = 16Ω.
Correct Answer:
B
— 16Ω
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Q. What is the total resistance of two resistors of 5 ohms and 10 ohms connected in parallel?
A.
3.33 ohms
B.
5 ohms
C.
15 ohms
D.
50 ohms
Show solution
Solution
1/R_eq = 1/5 + 1/10 => R_eq = 3.33 ohms.
Correct Answer:
A
— 3.33 ohms
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Q. What is the total resistance of two resistors of 8Ω and 12Ω connected in series?
A.
20Ω
B.
24Ω
C.
16Ω
D.
18Ω
Show solution
Solution
In series, R_eq = R1 + R2 = 8 + 12 = 20Ω.
Correct Answer:
A
— 20Ω
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Q. What is the total voltage across a parallel circuit with two branches, one with 10Ω and 20Ω resistors, if the total current is 3A?
A.
6V
B.
9V
C.
12V
D.
15V
Show solution
Solution
Using the formula V = I * R_eq. First, find R_eq = 1 / (1/10 + 1/20) = 6.67Ω. Then, V = 3A * 6.67Ω = 20V.
Correct Answer:
C
— 12V
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Q. What is the total voltage in a series circuit with a 9V battery and two resistors of 2Ω and 3Ω?
Show solution
Solution
In a series circuit, the total voltage is equal to the voltage of the battery, which is 9V.
Correct Answer:
A
— 9V
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Q. What is the truth value of the expression A AND (B OR C) when A = 1, B = 0, and C = 1?
Show solution
Solution
First, evaluate B OR C, which is 0 OR 1 = 1. Then, A AND 1 = 1 AND 1 = 1.
Correct Answer:
B
— 1
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Showing 4381 to 4410 of 5000 (167 Pages)
Physics Syllabus (JEE Main) MCQ & Objective Questions
The Physics Syllabus for JEE Main is crucial for students aiming to excel in their exams. Understanding this syllabus not only helps in grasping fundamental concepts but also enhances problem-solving skills through practice. Engaging with MCQs and objective questions is essential for effective exam preparation, as it allows students to identify important questions and strengthen their knowledge base.
What You Will Practise Here
Mechanics: Laws of Motion, Work, Energy, and Power
Thermodynamics: Laws of Thermodynamics, Heat Transfer
Waves and Oscillations: Simple Harmonic Motion, Wave Properties
Electromagnetism: Electric Fields, Magnetic Fields, and Circuits
Optics: Reflection, Refraction, and Optical Instruments
Modern Physics: Quantum Theory, Atomic Models, and Nuclear Physics
Fluid Mechanics: Properties of Fluids, Bernoulli's Principle
Exam Relevance
The Physics Syllabus (JEE Main) is integral to various examinations, including CBSE, State Boards, and competitive exams like NEET and JEE. Questions often focus on conceptual understanding and application of theories. Common patterns include numerical problems, conceptual MCQs, and assertion-reason type questions, which test both knowledge and analytical skills.
Common Mistakes Students Make
Misinterpreting the question stem, leading to incorrect answers.
Neglecting units and dimensions in calculations.
Overlooking the significance of diagrams in understanding concepts.
Confusing similar concepts, such as velocity and acceleration.
Failing to apply formulas correctly in different contexts.
FAQs
Question: What are the key topics in the Physics Syllabus for JEE Main?Answer: Key topics include Mechanics, Thermodynamics, Waves, Electromagnetism, Optics, Modern Physics, and Fluid Mechanics.
Question: How can I improve my performance in Physics MCQs?Answer: Regular practice of MCQs, understanding concepts deeply, and revising important formulas can significantly enhance your performance.
Start solving practice MCQs today to test your understanding of the Physics Syllabus (JEE Main). This will not only boost your confidence but also prepare you effectively for your upcoming exams. Remember, consistent practice is the key to success!
