Physics
TNPSC - Group 1 Paper 1 — Science
2-min read·10 key concepts·10 facts
AI-Powered Analysis
23
PYQs Analyzed
2019–2025
Years Covered
Paper 1
TNPSC - Group 1
This subtopic covers fundamental physics concepts like motion, energy, and waves, crucial for TNPSC exams. It tests understanding of key principles and their applications.
Key Concepts
Free Fall
In vacuum, all objects fall with same acceleration due to gravity.
Reverberation
Time of reverberation decreases with open windows and doors.
Dendrothermal Energy
Derived from biomass, not fossil fuels.
Quantum Nature of Light
Interference does not support quantum theory.
Doppler Effect
Relates to frequency change due to relative motion.
Equipotential Surface
Work done on it is zero as potential is constant.
Albedo
Reflectivity of Earth's surface to solar radiation.
Rutherford Unit
Measures radioactivity, 10^8 disintegrations per second.
Nuclear Forces
Strongly attractive, binding nucleons in nucleus.
Inertial Frames
Frames with constant velocity are inertial.
Must-Know Facts
- 1Free fall in vacuum: same acceleration (2019)
- 2Reverberation decreases with open windows (2019)
- 3Dendrothermal energy from biomass (2021)
- 4Interference does not support quantum theory (2022)
- 5Doppler effect involves frequency change (2022)
- 6Equipotential surface work done is zero (2024)
- 7Albedo is Earth's reflectivity (2024)
- 81 Rutherford = 10^8 disintegrations/sec (2025)
- 9Nuclear forces are strongly attractive (2019)
- 10Inertial frames have constant velocity (2024)
Exam Patterns
Statement-based questions dominate
Multiple-choice options with code selections
Concept-based factual recall
Application of principles in scenarios
Focus on definitions and properties
Common Traps
Confusing free fall with air resistance effects
Mixing up albedo with climate
Thinking interference supports quantum theory
Assuming mass affects pendulum period
Overlooking inertial frame conditions
Year Highlights
2024Questions on albedo, equipotential surface, and inertial frames were prominent.
2025Rutherford unit question tested specific numerical value.
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