Physics
MPSC - Rajyaseva Paper 1 — Science
2-min read·10 key concepts·10 facts
AI-Powered Analysis
23
PYQs Analyzed
2021–2024
Years Covered
Paper 1
MPSC - Rajyaseva
This subtopic covers fundamental physics concepts like motion, waves, thermodynamics, and electromagnetism, crucial for MPSC exam questions involving calculations, laws, and applications.
Key Concepts
Refractive Index
Ratio of light speed in vacuum to medium, calculated as n = v1/v2.
Friction Types
Film friction occurs with lubricants between surfaces.
Kinematics
Acceleration at peak height is gravitational acceleration (g).
Gas Laws
R = 0.0821 atm L/mol/K at STP (22.4 L/mol).
X-ray Diffraction
X-rays used to study crystal structures via Bragg's law.
Superconductivity
Materials with zero resistivity below critical temperature.
Planetary Motion
Kepler's second law: Planets move faster closer to the sun.
Bernoulli's Principle
Applies to fluid dynamics, not all flow scenarios.
Mirror Images
Number of images = (360/θ) - 1 for inclined mirrors.
Thermal Radiation
Wien's law: λ_max ≈ 9550 nm at 300K.
Must-Know Facts
- 1Mercury's distance: 5.8 crore km, 88-day orbit
- 2Refractive index calculation: 2.5 (v1=2e8, v2=1.25e8)
- 3Power formula: P = mgh/t (25 kg, 5m, 30s → 245W)
- 4X-rays (C) for crystal structure
- 5Superconductors (C) have zero resistivity
- 6R = 0.0821 atm L/mol/K
- 7Acceleration at peak height: g (9.8 m/s²)
- 8Images in 30° mirrors: 11
- 9Thermal wavelength at 300K: 9550 nm
- 10Bernoulli's equation (B) for P + hρg + ½ρv² = constant
Exam Patterns
Statement-based questions dominate
Numerical calculations for laws and formulas
Application of physical principles in real scenarios
Matching historical theories with scientists
Multiple-choice with precise scientific definitions
Common Traps
Confusing refractive index formula (n = v1/v2 vs. v2/v1)
Mixing up friction types (film vs. rolling)
Miscalculating mirror images (360/θ instead of 360/θ -1)
Incorrectly applying Bernoulli's equation to non-fluid scenarios
Overlooking units in thermal radiation wavelength calculations
Year Highlights
2024Questions on acceleration (C), X-rays (C), and thermal radiation (B) tested.
2023Gas laws (A), Bernoulli's equation (B), and planetary motion (A) emphasized.
2022SONAR (D) and mirror image calculations (C) were key.
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