Q. What is the term for the amount of heat required to raise the temperature of 1 kg of a substance by 1 degree Celsius?
A.
Heat capacity
B.
Specific heat capacity
C.
Latent heat
D.
Thermal conductivity
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Solution
Specific heat capacity is defined as the amount of heat required to raise the temperature of 1 kg of a substance by 1 degree Celsius.
Correct Answer:
B
— Specific heat capacity
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Q. What is the term for the amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius?
A.
Heat capacity
B.
Specific heat
C.
Latent heat
D.
Thermal conductivity
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Solution
Specific heat is defined as the amount of heat required to raise the temperature of a unit mass of a substance by one degree Celsius.
Correct Answer:
B
— Specific heat
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Q. What is the term for the change in pressure with depth in a fluid?
A.
Hydrostatic pressure
B.
Dynamic pressure
C.
Static pressure
D.
Total pressure
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Solution
Hydrostatic pressure refers to the pressure exerted by a fluid at rest due to the weight of the fluid above it.
Correct Answer:
A
— Hydrostatic pressure
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Q. What is the term for the energy required to remove an electron from an atom in the gas phase?
A.
Ionization energy
B.
Electron affinity
C.
Electronegativity
D.
Electrostatic energy
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Solution
Ionization energy is defined as the energy required to remove an electron from an atom in the gas phase.
Correct Answer:
A
— Ionization energy
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Q. What is the term for the heat transfer that occurs due to the movement of a fluid?
A.
Conduction
B.
Convection
C.
Radiation
D.
Insulation
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Solution
Convection is the term used for heat transfer that occurs due to the movement of a fluid.
Correct Answer:
B
— Convection
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Q. What is the term for the lowest frequency of a sound wave in a harmonic series?
A.
Fundamental frequency
B.
Overtone
C.
Harmonic
D.
Resonance
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Solution
The lowest frequency in a harmonic series is called the fundamental frequency.
Correct Answer:
A
— Fundamental frequency
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Q. What is the term for the measure of a fluid's resistance to flow?
A.
Density
B.
Viscosity
C.
Pressure
D.
Temperature
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Solution
Viscosity is the measure of a fluid's resistance to flow, indicating how thick or thin the fluid is.
Correct Answer:
B
— Viscosity
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Q. What is the term for the pressure exerted by a fluid at rest?
A.
Dynamic pressure
B.
Static pressure
C.
Hydrostatic pressure
D.
Atmospheric pressure
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Solution
Hydrostatic pressure is the pressure exerted by a fluid at rest due to the weight of the fluid above it.
Correct Answer:
C
— Hydrostatic pressure
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Q. What is the term for the rate of change of velocity?
A.
Acceleration
B.
Speed
C.
Momentum
D.
Force
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Solution
Acceleration is defined as the rate of change of velocity with respect to time.
Correct Answer:
A
— Acceleration
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Q. What is the term for the resistance of a fluid to flow?
A.
Density
B.
Viscosity
C.
Pressure
D.
Temperature
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Solution
Viscosity is the term used to describe the resistance of a fluid to flow.
Correct Answer:
B
— Viscosity
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Q. What is the term for the transfer of heat through electromagnetic waves?
A.
Conduction
B.
Convection
C.
Radiation
D.
Conduction and Convection
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Solution
Radiation is the transfer of heat through electromagnetic waves, such as infrared radiation.
Correct Answer:
C
— Radiation
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Q. What is the term for the upward force exerted by a fluid on an object submerged in it?
A.
Buoyancy
B.
Weight
C.
Pressure
D.
Density
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Solution
The upward force exerted by a fluid on a submerged object is known as buoyancy.
Correct Answer:
A
— Buoyancy
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Q. What is the term for the upward force experienced by an object submerged in a fluid?
A.
Buoyancy
B.
Weight
C.
Pressure
D.
Density
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Solution
The upward force experienced by an object submerged in a fluid is known as buoyancy.
Correct Answer:
A
— Buoyancy
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Q. What is the threshold frequency for a metal if the work function is 4.5 eV?
A.
5.4 x 10^14 Hz
B.
6.0 x 10^14 Hz
C.
7.2 x 10^14 Hz
D.
8.0 x 10^14 Hz
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Solution
Threshold frequency (ν₀) = Work function (Φ) / h = 4.5 eV / (4.14 x 10^-15 eV·s) = 5.4 x 10^14 Hz.
Correct Answer:
A
— 5.4 x 10^14 Hz
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Q. What is the threshold of hearing in terms of sound intensity level?
A.
0 dB
B.
10 dB
C.
20 dB
D.
30 dB
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Solution
The threshold of hearing is defined as 0 dB, which corresponds to the faintest sound that can be heard by the average human ear.
Correct Answer:
A
— 0 dB
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Q. What is the time period of a damped oscillator with a damping ratio of 0.1 and a natural frequency of 10 rad/s?
A.
0.2 s
B.
0.3 s
C.
0.4 s
D.
0.5 s
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Solution
Time period (T) = 2π/ω_n = 2π/10 = 0.2π ≈ 0.628 s.
Correct Answer:
C
— 0.4 s
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Q. What is the time period of a damped oscillator with a natural frequency of 3 rad/s and a damping ratio of 0.1?
A.
2π/3
B.
2π/3.1
C.
2π/3.2
D.
2π/3.3
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Solution
Time period (T) = 2π/ω_n = 2π/3 rad/s = 2π/3.
Correct Answer:
A
— 2π/3
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Q. What is the time period of a simple pendulum of length L?
A.
2π√(L/g)
B.
2π√(g/L)
C.
g/2π√L
D.
L/2π√g
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Solution
The time period T of a simple pendulum is given by T = 2π√(L/g), where L is the length of the pendulum and g is the acceleration due to gravity.
Correct Answer:
A
— 2π√(L/g)
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Q. What is the torque about a pivot if a force of 12 N is applied at a distance of 0.25 m at an angle of 90 degrees?
A.
3 Nm
B.
6 Nm
C.
12 Nm
D.
24 Nm
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Solution
Torque = Force × Distance = 12 N × 0.25 m = 3 Nm.
Correct Answer:
C
— 12 Nm
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Q. What is the torque about a pivot if a force of 8 N is applied perpendicular to a lever arm of 0.75 m?
A.
4 Nm
B.
6 Nm
C.
8 Nm
D.
10 Nm
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Solution
Torque = Force × Distance = 8 N × 0.75 m = 6 Nm.
Correct Answer:
C
— 8 Nm
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Q. What is the torque produced by a 60 N force acting at a distance of 0.75 m from the pivot point?
A.
45 Nm
B.
60 Nm
C.
75 Nm
D.
90 Nm
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Solution
Torque = Force × Distance = 60 N × 0.75 m = 45 Nm.
Correct Answer:
A
— 45 Nm
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Q. What is the torque produced by a 60 N force applied at a distance of 0.75 m from the pivot point?
A.
45 Nm
B.
60 Nm
C.
75 Nm
D.
90 Nm
Show solution
Solution
Torque = Force × Distance = 60 N × 0.75 m = 45 Nm.
Correct Answer:
A
— 45 Nm
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Q. What is the torque produced by a force of 10 N applied at a distance of 2 m from the pivot point, perpendicular to the lever arm?
A.
5 Nm
B.
10 Nm
C.
20 Nm
D.
15 Nm
Show solution
Solution
Torque (τ) = Force (F) × Distance (r) = 10 N × 2 m = 20 Nm.
Correct Answer:
C
— 20 Nm
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Q. What is the torque produced by a force of 15 N acting at an angle of 90 degrees to the lever arm of 0.5 m?
A.
0 Nm
B.
7.5 Nm
C.
15 Nm
D.
30 Nm
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Solution
Torque = Force × Distance × sin(θ) = 15 N × 0.5 m × sin(90°) = 15 Nm.
Correct Answer:
C
— 15 Nm
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Q. What is the torque produced by a force of 25 N acting at an angle of 90 degrees to the lever arm of 0.5 m?
A.
12.5 Nm
B.
25 Nm
C.
50 Nm
D.
0 Nm
Show solution
Solution
Torque = Force × Distance × sin(90°) = 25 N × 0.5 m × 1 = 12.5 Nm.
Correct Answer:
B
— 25 Nm
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Q. What is the total current flowing through a circuit if the total voltage is 12 V and the total resistance is 4 ohms?
A.
3 A
B.
4 A
C.
12 A
D.
48 A
Show solution
Solution
Using Ohm's Law, I = V / R. Here, I = 12 V / 4 ohms = 3 A.
Correct Answer:
A
— 3 A
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Q. What is the total current flowing through a circuit if the total voltage is 12V and the total resistance is 4Ω?
Show solution
Solution
Using Ohm's Law (I = V/R), the current is I = 12V / 4Ω = 3A.
Correct Answer:
B
— 3A
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Q. What is the total current flowing through a circuit if the total voltage is 24V and the total resistance is 6Ω?
Show solution
Solution
Using Ohm's Law, I = V/R = 24V / 6Ω = 4A.
Correct Answer:
B
— 4A
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Q. What is the total current flowing through a circuit with a 10V battery and two 5Ω resistors in series?
A.
0.5A
B.
1A
C.
2A
D.
5A
Show solution
Solution
Total resistance R = R1 + R2 = 5Ω + 5Ω = 10Ω. Using Ohm's law, I = V/R = 10V/10Ω = 1A.
Correct Answer:
B
— 1A
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Q. What is the total current flowing through a circuit with a 10V battery and two 5Ω resistors in parallel?
Show solution
Solution
Equivalent resistance R_eq = 1/(1/5 + 1/5) = 2.5Ω. Total current I = V/R_eq = 10V/2.5Ω = 4A.
Correct Answer:
B
— 2A
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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!