Q. What is the phenomenon called when light waves are restricted to vibrate in a single plane?
A.
Refraction
B.
Diffraction
C.
Polarization
D.
Interference
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Solution
The phenomenon of light waves being restricted to vibrate in a single plane is called polarization.
Correct Answer:
C
— Polarization
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Q. What is the phenomenon called when light waves bend around the edges of an obstacle?
A.
Reflection
B.
Refraction
C.
Diffraction
D.
Interference
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Solution
The bending of light waves around the edges of an obstacle is known as diffraction.
Correct Answer:
C
— Diffraction
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Q. What is the phenomenon called when sound waves bend around obstacles?
A.
Reflection
B.
Refraction
C.
Diffraction
D.
Interference
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Solution
The bending of sound waves around obstacles is known as diffraction.
Correct Answer:
C
— Diffraction
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Q. What is the phenomenon of diffraction primarily associated with?
A.
Reflection of light
B.
Bending of waves around obstacles
C.
Interference of waves
D.
Polarization of light
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Solution
Diffraction is the bending of waves around obstacles and the spreading of waves when they pass through small openings.
Correct Answer:
B
— Bending of waves around obstacles
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Q. What is the phenomenon of diffraction primarily responsible for?
A.
Bending of light around obstacles
B.
Reflection of light
C.
Refraction of light
D.
Polarization of light
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Solution
Diffraction is the bending of waves around obstacles and the spreading of waves when they pass through small openings.
Correct Answer:
A
— Bending of light around obstacles
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Q. What is the phenomenon of electromagnetic induction?
A.
The generation of electric current by a changing magnetic field
B.
The generation of magnetic field by a changing electric current
C.
The interaction between electric and magnetic fields
D.
The conversion of mechanical energy into electrical energy
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Solution
Electromagnetic induction refers to the generation of electric current in a conductor due to a changing magnetic field.
Correct Answer:
A
— The generation of electric current by a changing magnetic field
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Q. What is the phenomenon of polarization in light?
A.
The splitting of light into different colors
B.
The alignment of light waves in a particular direction
C.
The reflection of light off a surface
D.
The bending of light as it passes through a medium
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Solution
Polarization refers to the orientation of the oscillations of light waves in a particular direction.
Correct Answer:
B
— The alignment of light waves in a particular direction
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Q. What is the photoelectric effect primarily used for in technology?
A.
Solar panels
B.
LEDs
C.
Lasers
D.
Television screens
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Solution
The photoelectric effect is primarily used in solar panels to convert light energy into electrical energy.
Correct Answer:
A
— Solar panels
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Q. What is the photoelectric effect?
A.
Emission of electrons from a metal surface when light shines on it
B.
Absorption of light by a metal surface
C.
Reflection of light from a metal surface
D.
Transmission of light through a metal surface
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Solution
The photoelectric effect is the phenomenon where electrons are emitted from a metal surface when it is exposed to light of sufficient frequency.
Correct Answer:
A
— Emission of electrons from a metal surface when light shines on it
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Q. What is the potential at a distance of 1 m from a dipole with a dipole moment of 2 × 10^-9 C·m?
A.
0 V
B.
1 V
C.
2 V
D.
4 V
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Solution
Potential due to a dipole V = (1/4πε₀) * (p * cosθ) / r². At 1 m, it is negligible.
Correct Answer:
A
— 0 V
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Q. What is the potential difference across a 10 ohm resistor carrying a current of 2A?
A.
5V
B.
10V
C.
15V
D.
20V
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Solution
Using Ohm's law, V = I * R = 2A * 10 ohms = 20V.
Correct Answer:
D
— 20V
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Q. What is the potential difference across a 10Ω resistor if a current of 2A flows through it?
A.
5V
B.
10V
C.
20V
D.
15V
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Solution
Using Ohm's Law, V = I * R = 2A * 10Ω = 20V.
Correct Answer:
C
— 20V
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Q. What is the potential difference across a 10Ω resistor if a current of 4A flows through it?
A.
20V
B.
40V
C.
10V
D.
30V
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Solution
Using Ohm's Law, V = I * R = 4A * 10Ω = 40V.
Correct Answer:
A
— 20V
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Q. What is the potential difference across a 5 Ω resistor carrying a current of 2 A?
A.
10 V
B.
5 V
C.
2 V
D.
0 V
Show solution
Solution
Using Ohm's law, V = I * R = 2 A * 5 Ω = 10 V.
Correct Answer:
A
— 10 V
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Q. What is the potential difference across the galvanometer in a balanced Wheatstone bridge?
A.
Zero
B.
Equal to the supply voltage
C.
Depends on the resistances
D.
Half of the supply voltage
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Solution
In a balanced Wheatstone bridge, the potential difference across the galvanometer is zero, indicating no current flows through it.
Correct Answer:
A
— Zero
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Q. What is the potential difference between two points A and B if the electric field is uniform and equal to 50 N/C, and the distance between A and B is 2m?
A.
100 V
B.
50 V
C.
25 V
D.
0 V
Show solution
Solution
Potential difference V = E * d = 50 N/C * 2 m = 100 V.
Correct Answer:
A
— 100 V
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Q. What is the potential difference between two points A and B if the electric field is 5 N/C and the distance between them is 3 m?
A.
15 V
B.
5 V
C.
3 V
D.
0 V
Show solution
Solution
Potential difference V = E * d = 5 N/C * 3 m = 15 V.
Correct Answer:
A
— 15 V
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Q. What is the potential difference between two points A and B in an electric field if the work done in moving a charge of 5μC from A to B is 10mJ?
A.
2V
B.
5V
C.
10V
D.
20V
Show solution
Solution
Potential difference V = W/Q = 10mJ / 5μC = 10 × 10^-3 J / 5 × 10^-6 C = 2V.
Correct Answer:
B
— 5V
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Q. What is the potential difference between two points A and B in an electric field if the work done in moving a charge of 5μC from A to B is 0.02 J?
A.
4 V
B.
2 V
C.
10 V
D.
0.1 V
Show solution
Solution
Potential difference V = W/Q = 0.02 J / (5 × 10^-6 C) = 4000 V = 4 V.
Correct Answer:
A
— 4 V
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Q. What is the potential difference between two points A and B in an electric field if the work done in moving a charge of +2C from A to B is 10J?
A.
5 V
B.
10 V
C.
20 V
D.
2 V
Show solution
Solution
V = W/Q = 10 J / 2 C = 5 V.
Correct Answer:
B
— 10 V
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Q. What is the potential difference between two points A and B in an electric field of 200 N/C if the distance between them is 0.5 m?
A.
100 V
B.
200 V
C.
50 V
D.
25 V
Show solution
Solution
Potential difference V = E * d = 200 N/C * 0.5 m = 100 V.
Correct Answer:
A
— 100 V
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Q. What is the potential difference between two points in a uniform electric field of strength 200 N/C separated by 3m?
A.
600 V
B.
200 V
C.
300 V
D.
400 V
Show solution
Solution
V = E * d = 200 N/C * 3 m = 600 V.
Correct Answer:
A
— 600 V
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Q. What is the potential difference between two points in an electric field if the work done to move a charge of 2μC is 0.04 J?
A.
20 V
B.
30 V
C.
40 V
D.
50 V
Show solution
Solution
Potential difference V = W/q = 0.04 J / (2 × 10^-6 C) = 20,000 V = 20 V.
Correct Answer:
C
— 40 V
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Q. What is the potential difference between two points in an electric field if the work done in moving a charge of 3 C from one point to another is 15 J?
A.
5 V
B.
10 V
C.
15 V
D.
20 V
Show solution
Solution
Potential difference V = Work done / Charge = 15 J / 3 C = 5 V.
Correct Answer:
B
— 10 V
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Q. What is the potential difference between two points in an electric field if the work done in moving a charge of +2μC between them is 0.04 J?
A.
20 V
B.
10 V
C.
5 V
D.
2 V
Show solution
Solution
V = W/q = 0.04 J / (2 × 10^-6 C) = 20 V.
Correct Answer:
A
— 20 V
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Q. What is the potential difference between two points in an electric field if the work done to move a charge of 2C is 10J?
A.
5V
B.
20V
C.
2V
D.
10V
Show solution
Solution
Potential difference V = W/Q = 10J / 2C = 5V.
Correct Answer:
B
— 20V
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Q. What is the potential difference between two points in an electric field if the work done in moving a charge of +2μC is 0.04 J?
A.
20 V
B.
10 V
C.
5 V
D.
2 V
Show solution
Solution
Potential difference V = W/q = 0.04 J / (2 × 10^-6 C) = 20 V.
Correct Answer:
A
— 20 V
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Q. What is the potential energy of a charge q placed in an electric potential V?
A.
qV
B.
q/V
C.
V/q
D.
q²V
Show solution
Solution
The potential energy U of a charge q in an electric potential V is given by U = qV.
Correct Answer:
A
— qV
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Q. What is the potential energy of a dipole in a uniform electric field E when it is aligned with the field?
A.
-pE
B.
0
C.
pE
D.
pE/2
Show solution
Solution
Potential energy U = -p · E. When aligned, U = -pE.
Correct Answer:
A
— -pE
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Q. What is the potential energy of a mass of 5 kg at a height of 10 m in a gravitational field (g = 9.8 m/s²)?
A.
490 J
B.
980 J
C.
245 J
D.
50 J
Show solution
Solution
Potential energy PE = mgh = 5 kg × 9.8 m/s² × 10 m = 490 J.
Correct Answer:
B
— 980 J
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Showing 4021 to 4050 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!
