Q. What is the total current 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
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Solution
In a parallel circuit, the total current is the sum of the currents in the branches: 2 A + 3 A = 5 A.
Correct Answer:
A
— 5 A
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Q. What is the total mechanical energy of an object in free fall just before it hits the ground? (2022)
A.
Zero
B.
Potential energy only
C.
Kinetic energy only
D.
Total energy is conserved
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Solution
The total mechanical energy of an object in free fall is conserved, meaning it remains constant as potential energy converts to kinetic energy.
Correct Answer:
D
— Total energy is conserved
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Q. What is the total power consumed in a circuit with a power factor of 0.6, if the apparent power is 100 VA? (2023)
A.
60 W
B.
100 W
C.
40 W
D.
80 W
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Solution
The real power (P) can be calculated using P = Power Factor × Apparent Power. Therefore, P = 0.6 × 100 VA = 60 W.
Correct Answer:
A
— 60 W
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Q. What is the total resistance of two resistors, 4 ohms and 6 ohms, connected in series? (2021)
A.
10 ohms
B.
24 ohms
C.
2.4 ohms
D.
0.67 ohms
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Solution
In series, total resistance R = R1 + R2 = 4 Ω + 6 Ω = 10 Ω.
Correct Answer:
A
— 10 ohms
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Q. What is the typical current-voltage characteristic of a diode in reverse bias? (2019)
A.
Linear
B.
Exponential
C.
Constant
D.
Very small reverse saturation current
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Solution
In reverse bias, a diode exhibits a very small reverse saturation current until breakdown occurs.
Correct Answer:
D
— Very small reverse saturation current
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Q. What is the typical forward voltage drop across a silicon diode? (2023)
A.
0.2 V
B.
0.7 V
C.
1.5 V
D.
2.0 V
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Solution
The typical forward voltage drop across a silicon diode is approximately 0.7 V.
Correct Answer:
B
— 0.7 V
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Q. What is the unit of energy in the SI system? (2023)
A.
Joule
B.
Watt
C.
Newton
D.
Pascal
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Solution
The SI unit of energy is the Joule (J).
Correct Answer:
A
— Joule
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Q. What is the unit of inductive reactance? (2020)
A.
Ohm
B.
Henry
C.
Farad
D.
Tesla
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Solution
Inductive reactance (X_L) is measured in Ohms (Ω), which is the same unit used for resistance.
Correct Answer:
A
— Ohm
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Q. What is the unit of magnetic moment? (2023)
A.
Ampere-meter
B.
Tesla
C.
Weber
D.
Newton-meter
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Solution
The unit of magnetic moment is Ampere-meter (A·m²).
Correct Answer:
A
— Ampere-meter
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Q. What is the unit of measurement for electric current in the SI system? (2022)
A.
Volt
B.
Ampere
C.
Ohm
D.
Coulomb
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Solution
The SI unit of electric current is the Ampere (A).
Correct Answer:
B
— Ampere
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Q. What is the unit of measurement for electric current? (2019)
A.
Volt
B.
Ohm
C.
Ampere
D.
Watt
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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 unit of pressure in SI units? (2023)
A.
Pascal
B.
Bar
C.
Atmosphere
D.
Torr
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Solution
The SI unit of pressure is Pascal (Pa), which is equivalent to N/m².
Correct Answer:
A
— Pascal
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Q. What is the unit of pressure in SI? (2023)
A.
Pascal
B.
Bar
C.
Atmosphere
D.
Torr
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Solution
The SI unit of pressure is Pascal (Pa), which is equivalent to N/m².
Correct Answer:
A
— Pascal
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Q. What is the value of the gravitational constant (G) in SI units? (2023)
A.
6.67 x 10^-11 N m²/kg²
B.
9.81 m/s²
C.
3.00 x 10^8 m/s
D.
1.60 x 10^-19 C
Show solution
Solution
The gravitational constant (G) is 6.67 x 10^-11 N m²/kg².
Correct Answer:
A
— 6.67 x 10^-11 N m²/kg²
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Q. What is the voltage across a 10Ω resistor carrying a current of 2A? (2022)
A.
5V
B.
10V
C.
15V
D.
20V
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Solution
Using Ohm's law, V = I * R = 2A * 10Ω = 20V.
Correct Answer:
B
— 10V
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Q. What is the voltage drop across a 10Ω resistor carrying a current of 2A? (2019)
A.
5V
B.
10V
C.
15V
D.
20V
Show solution
Solution
Using Ohm's law, V = I * R = 2A * 10Ω = 20V.
Correct Answer:
B
— 10V
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Q. What is the voltage drop across a 3Ω resistor carrying a current of 4A? (2019)
A.
6V
B.
8V
C.
12V
D.
15V
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Solution
Using Ohm's law, V = I * R = 4A * 3Ω = 12V.
Correct Answer:
C
— 12V
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Q. What is the wavelength of light emitted when an electron transitions from n=3 to n=1 in a hydrogen atom? (2020)
A.
102.6 nm
B.
656.3 nm
C.
486.1 nm
D.
434.0 nm
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Solution
Using the Rydberg formula, the wavelength for the transition from n=3 to n=1 can be calculated to be approximately 102.6 nm.
Correct Answer:
A
— 102.6 nm
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Q. What is the wavelength of light emitted when an electron transitions from n=4 to n=2 in a hydrogen atom? (2020)
A.
486 nm
B.
656 nm
C.
434 nm
D.
410 nm
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Solution
Using the Rydberg formula, the wavelength for the transition from n=4 to n=2 can be calculated to be approximately 486 nm.
Correct Answer:
A
— 486 nm
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Q. What is the wavelength of light if the first-order maximum occurs at an angle of 30° in a double-slit experiment with a slit separation of 0.1 mm and a screen distance of 1 m? (2019)
A.
0.5 mm
B.
0.3 mm
C.
0.2 mm
D.
0.1 mm
Show solution
Solution
Using the formula λ = d sin θ / m, where d = 0.1 mm, θ = 30°, and m = 1, we find λ = 0.1 mm * sin(30°) = 0.1 mm * 0.5 = 0.05 mm = 0.2 mm.
Correct Answer:
C
— 0.2 mm
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Q. What is the work done by an ideal gas during an isobaric expansion? (2019)
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Solution
The work done by an ideal gas during an isobaric (constant pressure) expansion is given by W = PΔV.
Correct Answer:
A
— PΔV
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Q. What is the work done on a gas during an isothermal compression? (2019)
A.
Positive
B.
Negative
C.
Zero
D.
Depends on the volume
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Solution
The work done on a gas during isothermal compression is positive, as work is done on the gas to compress it.
Correct Answer:
A
— Positive
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Q. What is the work done when a force of 15 N moves an object 3 m in the direction of the force? (2021)
A.
45 J
B.
30 J
C.
15 J
D.
60 J
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Solution
Work Done (W) = Force * Distance = 15 N * 3 m = 45 J.
Correct Answer:
A
— 45 J
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Q. What is the Young's modulus of a material if a stress of 200 MPa produces a strain of 0.01? (2021)
A.
2000 MPa
B.
20 MPa
C.
200 MPa
D.
2 MPa
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Solution
Young's modulus (E) = Stress / Strain = 200 MPa / 0.01 = 20000 MPa = 2000 MPa.
Correct Answer:
A
— 2000 MPa
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Q. What type of charge carriers are predominant in n-type semiconductors? (2020)
A.
Holes
B.
Electrons
C.
Protons
D.
Neutrons
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Solution
In n-type semiconductors, electrons are the predominant charge carriers.
Correct Answer:
B
— Electrons
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Q. What type of charge carriers are present in n-type semiconductors? (2019)
A.
Holes
B.
Electrons
C.
Protons
D.
Neutrons
Show solution
Solution
In n-type semiconductors, the majority charge carriers are electrons.
Correct Answer:
B
— Electrons
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Q. What type of decay involves the conversion of a neutron into a proton? (2023)
A.
Alpha decay
B.
Beta decay
C.
Gamma decay
D.
Positron emission
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Solution
Beta decay involves the conversion of a neutron into a proton, emitting a beta particle (electron).
Correct Answer:
B
— Beta decay
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Q. What type of decay involves the conversion of a proton into a neutron? (2019)
A.
Alpha decay
B.
Beta plus decay
C.
Beta minus decay
D.
Gamma decay
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Solution
Beta plus decay involves the conversion of a proton into a neutron, emitting a positron.
Correct Answer:
B
— Beta plus decay
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Q. What type of image is formed by a convex lens when the object is placed beyond the 2F point? (2022)
A.
Real and inverted
B.
Virtual and erect
C.
Real and erect
D.
Virtual and inverted
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Solution
When the object is placed beyond 2F, the image formed by a convex lens is real, inverted, and smaller than the object.
Correct Answer:
A
— Real and inverted
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Q. What type of image is formed by a plane mirror? (2021)
A.
Real and inverted
B.
Virtual and erect
C.
Real and erect
D.
Virtual and inverted
Show solution
Solution
A plane mirror always forms a virtual and erect image, which is the same size as the object.
Correct Answer:
B
— Virtual and erect
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Showing 781 to 810 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!