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Physics — Stream SA

Mechanics, optics, heat, and basic electricity for Class 11 (Stream SA)

Key Concepts

  • Units, measurement and dimensional analysis
  • Kinematics and Newton's laws of motion
  • Work, energy and power; conservation laws
  • Basic thermal physics and the gas laws

Important Formulae

Equations of motion v = u + at; s = ut + ½at²
Newton's second law F = ma
Kinetic energy KE = ½mv²
Ideal gas law PV = nRT

Quick Tips

  • KVPY rewards reasoning — focus on understanding, not memorising.
  • Dimensional analysis quickly rules out wrong options.

Sample Practice Questions

  1. Using v = u + at with u = 0, a = 2 m/s² and t = 3 s, find v.

    • 5 m/s
    • 6 m/s
    • 8 m/s
    • 2 m/s
    Show answer

    Answer: 6 m/s

  2. What is the SI unit of force?

    • joule
    • newton
    • watt
    • pascal
    Show answer

    Answer: newton

  3. The formula for kinetic energy is:

    • mgh
    • ½mv²
    • mv
    • ma
    Show answer

    Answer: ½mv²

  4. The acceleration due to gravity near the Earth's surface is approximately:

    • 9.8 m/s²
    • 98 m/s²
    • 0.98 m/s²
    • 1 m/s²
    Show answer

    Answer: 9.8 m/s²

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Practice Questions

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Frequently Asked Questions

What are the key concepts in Physics — Stream SA for KVPY?

Units, measurement and dimensional analysis; Kinematics and Newton's laws of motion; Work, energy and power; conservation laws; Basic thermal physics and the gas laws.

Which formulae are important for Physics — Stream SA in KVPY?

Equations of motion: v = u + at; s = ut + ½at²; Newton's second law: F = ma; Kinetic energy: KE = ½mv²; Ideal gas law: PV = nRT.

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Physics