Physics Syllabus (JEE Main)

Current Electricity Electrostatics Gravitation Kinematics Kinetic Theory of Gases Laws of Motion Magnetism & EMI Modern Physics Optics Oscillations & Waves Properties of Matter Rotational Motion Thermodynamics Units & Measurement Work, Energy & Power

Q. An object is thrown horizontally from the top of a tower 80 m high. How long will it take to hit the ground?

A. 4 s
B. 5 s
C. 3 s
D. 2 s

Solution

Using the equation h = (1/2)gt², where h = 80 m and g = 9.8 m/s², we have 80 = (1/2)*9.8*t². Solving gives t² = 16.33, so t ≈ 4 s.

Correct Answer: B — 5 s

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Q. An object is thrown upwards with a speed of 20 m/s. How long will it take to reach the maximum height? (Assume g = 10 m/s²)

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

Solution

Time to reach maximum height = initial velocity / g = 20 m/s / 10 m/s² = 2 s.

Correct Answer: B — 2 s

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Q. An object is thrown vertically upward with a speed of 20 m/s. How high will it rise before coming to rest?

A. 10 m
B. 20 m
C. 30 m
D. 40 m

Solution

Maximum height (H) = (u²)/(2g) = (20²)/(2*9.8) ≈ 20.4 m.

Correct Answer: C — 30 m

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Q. An object is thrown vertically upward with a speed of 30 m/s. How high will it rise before coming to rest?

A. 45 m
B. 90 m
C. 135 m
D. 180 m

Solution

Using the formula: h = (v² - u²) / (2g), where v = 0 m/s, u = 30 m/s, g = 9.8 m/s². h = (0 - 30²) / (2 * -9.8) = 45.92 m, approximately 45 m.

Correct Answer: B — 90 m

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Q. An object is thrown vertically upward with a speed of 30 m/s. How high will it rise before coming to a momentary stop?

A. 45 m
B. 60 m
C. 90 m
D. 135 m

Solution

Using the formula: h = (v² - u²) / (2g), where v = 0 m/s (at the highest point), u = 30 m/s, g = 9.8 m/s². h = (0 - 30²) / (2 * -9.8) = 45.92 m, approximately 45 m.

Correct Answer: B — 60 m

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Q. An object is thrown vertically upwards with a speed of 15 m/s. What is the maximum height it reaches? (g = 10 m/s²)

A. 11.25 m
B. 22.5 m
C. 15 m
D. 20 m

Solution

Maximum Height (h) = v^2 / (2g) = (15^2) / (2 * 10) = 11.25 m

Correct Answer: B — 22.5 m

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Q. An object is thrown vertically upwards with a speed of 20 m/s. How long will it take to reach the maximum height?

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

Solution

Time to reach maximum height (t) = u/g = 20/9.8 = 2.04 s.

Correct Answer: B — 2 s

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Q. An object is thrown vertically upwards with a speed of 30 m/s. How high will it rise before coming to rest?

A. 45 m
B. 60 m
C. 90 m
D. 120 m

Solution

Using the formula: h = (v² - u²) / (2g), where v = 0 m/s, u = 30 m/s, g = 9.8 m/s². h = (0 - 30²) / (2 * -9.8) = 45.92 m, approximately 45 m.

Correct Answer: B — 60 m

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Q. An object is thrown vertically upwards with a speed of 30 m/s. How high will it rise before coming to rest momentarily?

A. 45 m
B. 60 m
C. 90 m
D. 135 m

Solution

Using the formula: h = (v² - u²) / (2g), where v = 0 m/s (at the highest point), u = 30 m/s, g = 9.8 m/s². h = (0 - 30²) / (2 * -9.8) = 45.92 m, approximately 45 m.

Correct Answer: B — 60 m

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Q. An object moves in a circular path with a radius of 10 m at a speed of 5 m/s. What is the period of the motion?

A. 2π s
B. 4π s
C. 10 s
D. 20 s

Solution

Period (T) = (2πr)/v = (2π * 10)/5 = 4π s.

Correct Answer: A — 2π s

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Q. An object moves in a straight line with a velocity of 10 m/s. If it accelerates at 2 m/s² for 5 seconds, what will be its final velocity?

A. 20 m/s
B. 30 m/s
C. 10 m/s
D. 15 m/s

Solution

Final velocity (v) = u + at = 10 + (2 * 5) = 20 m/s.

Correct Answer: B — 30 m/s

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Q. An object moves in a straight line with an acceleration of 2 m/s². If its initial velocity is 5 m/s, what will be its velocity after 3 seconds?

A. 5 m/s
B. 8 m/s
C. 11 m/s
D. 14 m/s

Solution

Final velocity (v) = u + at = 5 + (2 * 3) = 11 m/s.

Correct Answer: C — 11 m/s

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Q. An object moves in a straight line with an acceleration of 2 m/s². If its initial velocity is 3 m/s, what will be its velocity after 5 seconds?

A. 8 m/s
B. 10 m/s
C. 13 m/s
D. 15 m/s

Solution

Final velocity (v) = u + at = 3 + (2 * 5) = 13 m/s.

Correct Answer: C — 13 m/s

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Q. An object moves in a straight line with an acceleration of 2 m/s². If its initial velocity is 10 m/s, what will be its velocity after 5 seconds?

A. 10 m/s
B. 20 m/s
C. 30 m/s
D. 40 m/s

Solution

Final velocity (v) = u + at = 10 + 2*5 = 20 m/s.

Correct Answer: C — 30 m/s

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Q. An object moves in a straight line with an initial velocity of 5 m/s and accelerates at 2 m/s². What will be its velocity after 4 seconds?

A. 5 m/s
B. 13 m/s
C. 15 m/s
D. 20 m/s

Solution

Using the formula: final velocity = initial velocity + acceleration * time = 5 + 2 * 4 = 13 m/s.

Correct Answer: B — 13 m/s

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Q. An object moves with a constant speed of 15 m/s for 10 seconds. What distance does it cover?

A. 100 m
B. 150 m
C. 200 m
D. 250 m

Solution

Distance = speed * time = 15 m/s * 10 s = 150 m.

Correct Answer: B — 150 m

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Q. An object moves with a uniform speed of 15 m/s. How far will it travel in 20 seconds?

A. 150 m
B. 300 m
C. 450 m
D. 600 m

Solution

Distance = speed * time = 15 m/s * 20 s = 300 m.

Correct Answer: B — 300 m

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Q. At absolute zero, the kinetic energy of gas molecules is:

A. Maximum
B. Zero
C. Minimum
D. Undefined

Solution

At absolute zero, the kinetic energy of gas molecules is zero, as they are at their lowest energy state.

Correct Answer: B — Zero

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Q. At absolute zero, what is the expected volume of an ideal gas?

A. Zero
B. Infinite
C. Constant
D. Undefined

Solution

At absolute zero, the volume of an ideal gas is expected to be zero according to Charles's Law.

Correct Answer: A — Zero

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Q. At absolute zero, what is the theoretical volume of an ideal gas?

A. Zero
B. Infinite
C. Constant
D. Undefined

Solution

At absolute zero, the volume of an ideal gas is theoretically zero according to Charles's Law.

Correct Answer: A — Zero

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Q. At constant pressure, if the temperature of a gas is increased, what happens to its volume?

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

Solution

According to Charles's Law, at constant pressure, the volume of a gas increases with an increase in temperature.

Correct Answer: B — It increases

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Q. At constant pressure, what is the relationship between volume and temperature of a gas?

A. Directly proportional
B. Inversely proportional
C. Independent
D. Exponential

Solution

According to Charles's Law, volume and temperature are directly proportional at constant pressure.

Correct Answer: A — Directly proportional

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Q. At what distance from a mass M does the gravitational potential become zero?

A. At infinity
B. At the surface of the mass
C. At 1 meter
D. At 2 meters

Solution

The gravitational potential becomes zero at infinity, as V approaches zero as r approaches infinity.

Correct Answer: A — At infinity

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Q. At what point between two equal masses does the gravitational force become zero?

A. At the midpoint
B. At a point closer to one mass
C. At a point closer to the other mass
D. It never becomes zero

Solution

The gravitational forces exerted by both masses cancel each other out at the midpoint.

Correct Answer: A — At the midpoint

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Q. At what point in a gravitational field is the gravitational potential constant?

A. At the center of the mass
B. At infinity
C. Along an equipotential surface
D. At the surface of the mass

Solution

The gravitational potential is constant along an equipotential surface.

Correct Answer: C — Along an equipotential surface

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Q. At what point in space is the gravitational potential energy of an object zero?

A. At the center of the Earth
B. At infinity
C. At the surface of the Earth
D. At the Moon

Solution

The gravitational potential energy is considered zero at infinity.

Correct Answer: B — At infinity

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Q. At what point in space is the gravitational potential zero?

A. At the center of the Earth.
B. At infinity.
C. At the surface of the Earth.
D. At the center of the Moon.

Solution

The gravitational potential is considered zero at infinity.

Correct Answer: B — At infinity.

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Q. At what temperature (in Kelvin) does the volume of a gas become zero according to Charles's Law?

A. 0 K
B. 273 K
C. 100 K
D. 32 K

Solution

According to Charles's Law, the volume of a gas approaches zero at absolute zero, which is 0 K.

Correct Answer: A — 0 K

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Q. At what temperature does the volume of a gas theoretically become zero?

A. 0°C
B. 0 K
C. 273 K
D. 100 K

Solution

According to Charles's Law, the volume of a gas approaches zero at absolute zero, which is 0 K.

Correct Answer: B — 0 K

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Q. At what temperature will the RMS speed of a gas be 1000 m/s if its molar mass is 0.044 kg/mol? (R = 8.314 J/(mol K))

A. 500 K
B. 600 K
C. 700 K
D. 800 K

Solution

Using v_rms = sqrt(3RT/M), we solve for T: T = (v_rms^2 * M) / (3R) = (1000^2 * 0.044) / (3 * 8.314) = 700 K.

Correct Answer: C — 700 K

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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!

Physics Syllabus (JEE Main)

Physics Syllabus (JEE Main) MCQ & Objective Questions

What You Will Practise Here

Exam Relevance

Common Mistakes Students Make

FAQs

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