Q. What is the shear modulus of a material if a shear stress of 100 MPa produces a shear strain of 0.05? (2021)
A.
2000 MPa
B.
500 MPa
C.
1000 MPa
D.
1500 MPa
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Solution
Shear modulus (G) = Shear stress / Shear strain = 100 MPa / 0.05 = 2000 MPa.
Correct Answer:
A
— 2000 MPa
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Q. What is the shear modulus of a material if a shear stress of 100 MPa produces a shear strain of 0.02? (2022)
A.
5000 MPa
B.
2000 MPa
C.
1000 MPa
D.
2500 MPa
Show solution
Solution
Shear modulus (G) = Shear stress / Shear strain = 100 MPa / 0.02 = 5000 MPa.
Correct Answer:
A
— 5000 MPa
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Q. What is the SI unit of electric current? (2021)
A.
Volt
B.
Ohm
C.
Ampere
D.
Coulomb
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Solution
The SI unit of electric current is the Ampere (A).
Correct Answer:
C
— Ampere
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Q. What is the SI unit of magnetic field strength? (2023)
A.
Tesla
B.
Weber
C.
Henry
D.
Ampere
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Solution
The SI unit of magnetic field strength is the Tesla (T).
Correct Answer:
A
— Tesla
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Q. What is the SI unit of magnetic moment? (2023)
A.
Ampere-meter
B.
Tesla
C.
Joule per Tesla
D.
Newton per Ampere
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Solution
The SI unit of magnetic moment is Joule per Tesla (J/T), which can also be expressed as Ampere-meter squared (A·m²).
Correct Answer:
C
— Joule per Tesla
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Q. What is the significance of significant figures in a measurement? (2019)
A.
They indicate the precision of the measurement
B.
They indicate the accuracy of the measurement
C.
They are used for unit conversion
D.
They are irrelevant
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Solution
Significant figures indicate the precision of a measurement, reflecting the certainty of the digits.
Correct Answer:
A
— They indicate the precision of the measurement
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Q. What is the significance of significant figures in measurements? (2019)
A.
To indicate the precision of a measurement
B.
To show the accuracy of a measurement
C.
To represent the unit of measurement
D.
To determine the error in measurement
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Solution
Significant figures indicate the precision of a measurement, reflecting the certainty of the digits.
Correct Answer:
A
— To indicate the precision of a measurement
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Q. What is the significance of the Heisenberg Uncertainty Principle in atomic physics? (2023)
A.
It defines the position of an electron
B.
It states that energy levels are quantized
C.
It limits the precision of measuring position and momentum
D.
It explains the stability of the nucleus
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Solution
The Heisenberg Uncertainty Principle states that it is impossible to simultaneously know the exact position and momentum of a particle.
Correct Answer:
C
— It limits the precision of measuring position and momentum
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Q. What is the significance of the mass defect in a nucleus? (2023)
A.
It indicates the stability of the nucleus
B.
It is the mass of the nucleus
C.
It is the mass of the electrons
D.
It has no significance
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Solution
The mass defect is the difference between the mass of the nucleus and the sum of the masses of its individual nucleons, indicating the stability and binding energy of the nucleus.
Correct Answer:
A
— It indicates the stability of the nucleus
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Q. What is the significance of the Pauli Exclusion Principle in atomic structure? (2019)
A.
No two electrons can have the same set of quantum numbers.
B.
Electrons fill the lowest energy levels first.
C.
Electrons repel each other.
D.
Electrons can exist in any energy state.
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Solution
The Pauli Exclusion Principle states that no two electrons in an atom can have the same set of quantum numbers.
Correct Answer:
A
— No two electrons can have the same set of quantum numbers.
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Q. What is the specific heat capacity of air at constant pressure? (2022)
A.
1.005 J/kg·K
B.
0.718 J/kg·K
C.
4.186 J/kg·K
D.
2.093 J/kg·K
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Solution
The specific heat capacity of air at constant pressure is approximately 1.005 J/kg·K.
Correct Answer:
A
— 1.005 J/kg·K
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Q. What is the specific heat capacity of air? (2022)
A.
1.005 J/kg·K
B.
4.18 J/kg·K
C.
2.09 J/kg·K
D.
0.9 J/kg·K
Show solution
Solution
The specific heat capacity of air is approximately 1.005 J/kg·K.
Correct Answer:
A
— 1.005 J/kg·K
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Q. What is the specific heat capacity of iron? (2023)
A.
0.45 J/g·K
B.
1.00 J/g·K
C.
2.00 J/g·K
D.
4.18 J/g·K
Show solution
Solution
The specific heat capacity of iron is approximately 0.45 J/g·K.
Correct Answer:
A
— 0.45 J/g·K
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Q. What is the standard unit of time in the SI system? (2020)
A.
Minute
B.
Hour
C.
Second
D.
Day
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Solution
The standard unit of time in the SI system is the second (s).
Correct Answer:
C
— Second
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Q. What is the term for the energy required to change a substance from liquid to gas? (2023)
A.
Latent heat of fusion
B.
Latent heat of vaporization
C.
Specific heat
D.
Thermal energy
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Solution
The energy required to change a substance from liquid to gas is called the latent heat of vaporization.
Correct Answer:
B
— Latent heat of vaporization
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Q. What is the term for the heat required to change a substance from solid to liquid at constant temperature? (2019)
A.
Latent heat of fusion
B.
Latent heat of vaporization
C.
Specific heat
D.
Sensible heat
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Solution
The heat required to change a substance from solid to liquid at constant temperature is called the latent heat of fusion.
Correct Answer:
A
— Latent heat of fusion
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Q. What is the term for the heat required to change a substance from solid to liquid at its melting point? (2019)
A.
Latent heat of fusion
B.
Latent heat of vaporization
C.
Specific heat
D.
Sensible heat
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Solution
The heat required to change a substance from solid to liquid at its melting point is called the latent heat of fusion.
Correct Answer:
A
— Latent heat of fusion
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Q. What is the term for the phenomenon where a liquid rises in a narrow tube against gravity? (2019)
A.
Capillarity
B.
Viscosity
C.
Surface Tension
D.
Hydrostatic Pressure
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Solution
The phenomenon where a liquid rises in a narrow tube against gravity is called capillarity.
Correct Answer:
A
— Capillarity
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Q. What is the term for the phenomenon where a liquid's surface behaves like a stretched elastic membrane?
A.
Surface Tension
B.
Capillarity
C.
Viscosity
D.
Hydrostatic Pressure
Show solution
Solution
Surface tension is the phenomenon where a liquid's surface behaves like a stretched elastic membrane due to cohesive forces.
Correct Answer:
A
— Surface Tension
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Q. What is the term for the pressure difference that causes fluid to flow?
A.
Hydrostatic Pressure
B.
Dynamic Pressure
C.
Pressure Gradient
D.
Static Pressure
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Solution
The pressure difference that causes fluid to flow is known as the pressure gradient.
Correct Answer:
C
— Pressure Gradient
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Q. What is the term for the ratio of the density of a substance to the density of a reference substance, typically water?
A.
Specific gravity
B.
Viscosity
C.
Pressure
D.
Buoyancy
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Solution
Specific gravity is the ratio of the density of a substance to the density of a reference substance, typically water.
Correct Answer:
A
— Specific gravity
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Q. What is the term for the temperature at which a substance changes from liquid to gas? (2023)
A.
Melting point
B.
Boiling point
C.
Freezing point
D.
Sublimation point
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Solution
The temperature at which a substance changes from liquid to gas is called the boiling point.
Correct Answer:
B
— Boiling point
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Q. What is the total current flowing in a circuit with a 9V battery and a total resistance of 3 ohms? (2020)
A.
1 A
B.
2 A
C.
3 A
D.
4 A
Show solution
Solution
Using Ohm's law, I = V/R = 9V / 3Ω = 3 A.
Correct Answer:
B
— 2 A
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Q. What is the total current flowing in a circuit with three resistors in parallel, each carrying 2 A? (2021)
A.
2 A
B.
4 A
C.
6 A
D.
8 A
Show solution
Solution
In parallel, the total current is the sum of the currents: 2 A + 2 A + 2 A = 6 A.
Correct Answer:
C
— 6 A
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Q. What is the total current flowing in a parallel circuit with two branches carrying 2 A and 3 A respectively? (2023)
A.
5 A
B.
6 A
C.
1 A
D.
2.5 A
Show solution
Solution
In a parallel circuit, the total current is the sum of the currents in each branch: 2 A + 3 A = 5 A.
Correct Answer:
A
— 5 A
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Q. What is the total current in a circuit with a 10Ω resistor and a 5Ω resistor in series connected to a 30V battery? (2021)
Show solution
Solution
Total resistance R = 10Ω + 5Ω = 15Ω. Current I = V/R = 30V/15Ω = 2A.
Correct Answer:
B
— 3A
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Q. What is the total current in a circuit with a 12V battery and two 6Ω resistors in series? (2021)
Show solution
Solution
Total resistance R = 6 + 6 = 12Ω. Current I = V/R = 12V/12Ω = 1A.
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 series? (2021)
Show solution
Solution
Total resistance R = 3Ω + 3Ω = 6Ω. Current I = V/R = 9V/6Ω = 1.5A.
Correct Answer:
A
— 1A
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Q. What is the total current in a circuit with two branches, one carrying 2A and the other 3A? (2021)
Show solution
Solution
In parallel circuits, the total current is the sum of the currents in each branch: 2A + 3A = 5A.
Correct Answer:
A
— 5A
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Q. What is the total current in a circuit with two branches, one carrying 3A and the other 5A? (2021)
Show solution
Solution
In parallel circuits, the total current is the sum of the currents in each branch: 3A + 5A = 8A.
Correct Answer:
D
— 8A
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Showing 751 to 780 of 956 (32 Pages)
Physics (NEET) MCQ & Objective Questions
Physics is a crucial subject for students preparing for NEET and other competitive exams. Mastering Physics (NEET) through MCQs and objective questions not only enhances conceptual clarity but also boosts your confidence for the exam. Regular practice of important questions helps in identifying weak areas and improves overall performance in exams.
What You Will Practise Here
Mechanics: Laws of Motion and their applications
Thermodynamics: Key principles and formulas
Electromagnetism: Concepts of electric fields and circuits
Optics: Reflection, refraction, and lens formulas
Waves: Sound waves and their properties
Modern Physics: Basics of quantum mechanics and atomic structure
Units and Measurements: Significant figures and dimensional analysis
Exam Relevance
Physics is a significant part of the syllabus for CBSE, State Boards, NEET, and JEE. In these exams, you can expect a variety of question patterns, including conceptual MCQs, numerical problems, and application-based questions. Understanding the core concepts and practicing Physics (NEET) MCQ questions will help you tackle these questions effectively and efficiently.
Common Mistakes Students Make
Misinterpreting the question stem, leading to incorrect answers.
Neglecting units and dimensions in numerical problems.
Overlooking the significance of diagrams in understanding concepts.
Confusing similar concepts, such as velocity and acceleration.
FAQs
Question: How can I improve my Physics (NEET) scores?Answer: Regular practice of MCQs and understanding the underlying concepts will significantly enhance your scores.
Question: Are there specific topics I should focus on for NEET Physics?Answer: Focus on Mechanics, Thermodynamics, and Electromagnetism, as these areas frequently appear in exams.
Start solving practice MCQs today to test your understanding and solidify your knowledge in Physics. Remember, consistent practice is the key to success in your exam preparation!