Q. In the photoelectric effect, what happens to the kinetic energy of emitted electrons when the frequency of incident light is increased? (2021)
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes zero
Solution
According to the photoelectric effect, the kinetic energy of emitted electrons increases with the frequency of the incident light, provided the frequency is above the threshold frequency.
Q. In the photoelectric effect, what happens to the kinetic energy of emitted electrons as the frequency of incident light increases? (2021)
A.
Increases
B.
Decreases
C.
Remains constant
D.
Becomes zero
Solution
According to the photoelectric effect, the kinetic energy of emitted electrons increases with the frequency of the incident light, provided the frequency is above the threshold frequency.
Q. In thin film interference, which of the following will not affect the interference pattern? (2022)
A.
Thickness of the film
B.
Wavelength of light
C.
Angle of incidence
D.
Color of the light source
Solution
While thickness, wavelength, and angle of incidence affect the interference pattern, the color of the light source does not directly affect the pattern itself.
Q. The average speed of gas molecules is given by the formula:
A.
(8kT/πm)^(1/2)
B.
(3kT/m)^(1/2)
C.
(2kT/m)^(1/2)
D.
(kT/m)^(1/2)
Solution
The average speed of gas molecules is given by the formula v_avg = (8kT/πm)^(1/2), where k is the Boltzmann constant, T is the temperature, and m is the mass of a gas molecule.
Q. The average speed of gas molecules is given by which of the following expressions? (2022)
A.
√(8RT/πM)
B.
√(3RT/M)
C.
√(2RT/M)
D.
√(RT/M)
Solution
The average speed of gas molecules is given by the expression v_avg = √(8RT/πM), where R is the universal gas constant, T is the temperature, and M is the molar mass of the gas.
Q. The average speed of gas molecules is given by which of the following formulas? (2023)
A.
(8kT/πm)^(1/2)
B.
(3kT/m)^(1/2)
C.
(2kT/m)^(1/2)
D.
(kT/m)^(1/2)
Solution
The average speed of gas molecules is given by the formula v_avg = sqrt(8kT/πm), where k is the Boltzmann constant, T is the temperature, and m is the mass of a molecule.
Q. The capacitance of a parallel plate capacitor is directly proportional to which of the following? (2019)
A.
Distance between plates
B.
Area of plates
C.
Voltage across plates
D.
Dielectric constant
Solution
Capacitance (C) is directly proportional to the area of the plates (A) and the dielectric constant (ε) and inversely proportional to the distance (d) between the plates.
Q. The capacitance of a parallel plate capacitor is given by which formula? (2020)
A.
C = ε₀A/d
B.
C = Q/V
C.
C = 1/(4πε₀r)
D.
C = V/I
Solution
The capacitance (C) of a parallel plate capacitor is given by the formula C = ε₀A/d, where A is the area of the plates and d is the separation between them.
Q. The electric field between the plates of a parallel plate capacitor is given by which expression? (2020)
A.
E = V/d
B.
E = d/V
C.
E = CV
D.
E = Q/A
Solution
The electric field (E) between the plates of a parallel plate capacitor is given by the expression E = V/d, where V is the voltage and d is the distance between the plates.
Q. The electric field between the plates of a parallel plate capacitor is given by which formula? (2020)
A.
E = V/d
B.
E = Q/A
C.
E = CV
D.
E = 1/(4πε₀r²)
Solution
The electric field (E) between the plates of a parallel plate capacitor is given by the formula E = V/d, where V is the voltage and d is the separation between the plates.
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!
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