# Physics - Class XI Resources

The following list of online resources are provided as a sample of curated resources. New resources shall be added as we come across interesting and relevant online materials.

#### 1. Rest And Motion, Position And Path Length Of An Object

Description: Explanation of rest, motion, position, and path length of an object.

Core Concepts: Rest, motion, and position.

#### 2. Position, velocity and acceleration

Description: Explanations on position, velocity and acceleration.

Core Concepts: Position, velocity and acceleration.

#### 3. Graphical analysis of velocity and acceleration

Description: Explanation on graphical analysis of displacement-time relation and velocity-time relation.

Core Concepts: Instantaneous Velocity: displacement-time relation and velocity-time relation.

#### 4. Kinematic Equations of Motion

Description: Explanation on derivation of kinematic equations.

Core Concepts: Kinematic equations: Equations of motion.

#### 5. Addition and subtraction of vectors

Description: Explanation on process to determine the magnitude and direction of the resultant vector.

Core Concepts: Vectors: magnitude and direction of the resultant vector.

#### 6. Projectile motion

Description: Explanation of projectile motion.

Core Concepts: Projectile motion.

#### 7. Newton's first law of motion

Description: Explanation based on Newton’s First Law of Motion.

Core Concepts: Newton’s Laws of Motion: First Law

• Video on Newton's first law of motion
• Video on inertia
• Worksheet on Newton's first law of motion
• Web page on Newton's first law
• #### 8. Newton’s Second Law of Motion

Description: Explanation of Newton’s Second law of motion.

Core Concepts: Newton’s laws of motion: Second law.

#### 9. Newton’s Third Law of Motion

Description: Explanation of Newton’s Third law of motion.

Core Concepts: Newton’s Laws of Motion: Third law.

#### 10. Conservation of momentum

Description:  Concept of conservation of momentum deduce though simulation.

Core Concepts: Conservation of momentum and to calculate conservation of momentum

#### 11. Rotational motion

Description: Explanation on the concept of rotational motion and centripetal acceleration.

Core Concepts: Circular motion: Rotational motion and centripetal acceleration.

#### 12. Demonstration of Circular motion

Description: Demonstration of circular motion using centripetal force apparatus.

Core Concepts: Circular motion: Centripetal force apparatus.

#### 13. Elastic behaviour of solids and Types of Stress and Strain

Description: Explanation of elastic behaviour of solids and types of stress and strain.

Core Concepts: Elastic behavior of solids: elastic behaviour of solids, types of stress and strain and strain curve.

#### 14. Hooke's Law

Description: Explanation to verify Hooke’s law law through simulation.

Core Concepts: Hooke's Law and derivation of restoring force.

#### 15. work done by the spring force

Description: Explanation on work done by the spring force.

Core Concepts: Derivation of work done by a spring force.

#### 16. Tensile test and Young's Modulus

Description: Explanation on how to calculate the strength of steel.

Core Concepts: Elastic behavior of solids: Tensile test.

#### 17. Gravitational force

Description: Explanations of  gravitational force and work done.

Core Concepts: Work: Gravitational force.

#### 18. Potential energy due to gravity

Description: Determination of potential energy due to gravity.

Core Concepts: Work: Potential energy due to gravity.

#### 19. Conservation of mechanical energy (Kinetic and Potential Energy)

Description: Explanation on conservation of mechanical energy.

Core Concepts: Conservation of mechanical energy.

#### 20. First law of thermodynamics

Description: Explanation to prove the first law of thermodynamic through simulation.

Core Concepts: Heat, Internal Energy and Work : First Law of Thermodynamic.

#### 21. Magnetic field and force

Description: Explanation of magnetic force and magnetic field.

Core Concepts: Magnetic force and field.

#### 22. Magnetic field around the current carrying wire

Description: Explanation of magnetic field around the current carrying conductor.

Core Concepts: Magnetic force and field: magnetic field around the wire.

#### 23. Lorentz force

Core Concepts: Magnetic force and field: Lorentz force.

#### 24. Magnetic flux

Description: Description of magnetic flux based on the different orientation of the surfaces.

Core Concepts: Magnetic flux.

#### 25. Helical motion of charged particles

Description: Explanation on helical motion of charged particles in a uniform magnetic field.

Core Concepts: Motion of a charged particle in a uniform magnetic field.

#### 26. Resistivity of various Materials

Description: Resistivity of various materials and mathematical expression.

Core Concepts: Resistivity, mathematical expression and relationship between resistance and resistivity.

#### 27. Resistors - Color coding

Description: Definition of resistors and color coding for identification of resistors.

Core Concepts: resistors and color coding of resistors

#### 28. Electrical Energy and Power

Description: Definition of electrical energy, power and calculation of electricity bill.

Core Concepts: electrical energy and electrical power

#### 29. Internal Resistance of cell

Description: Definition of internal resistance cell

Core Concepts: Internal resistance, voltage drop

#### 30. Combination of resistors in series

Description: Calculation of effective resistance by connecting the resistors in different ways.

Core Concepts: Series combination of resistors

#### 31. Combination of resistance in parallel

Description: Understanding the concept of parallel combination and calculation of effective resistance.

Core Concepts: Parallel combination and calculation of effective resistance.

#### 32. Snell’s Law

Description: Description of  bending of the light when traveling through the different media.

Core Concepts: Snell's law.

#### 33. Total internal reflection

Description: Comprehension of total internal reflection and its application.

Core Concepts: Total internal reflection and its application

#### 34. Construction of Optical fibre

Description: Construction of optical fibre, acceptance angle, and application of optical fibre.

Core Concepts: Construction of optical fibre and its application

#### 35. Concave Mirror

Description: Concave mirror, radius of curvature, and focal length.

Core Concepts: Spherometer, least count of spherometer.

#### 36. Propagation of waves

Description: Introduction of electromagnetic waves and mechanical waves

Core Concepts: EM waves, mechanical waves

#### 37. Longitudinal and transverse wave

Description: Observation of the proportional relationships amongst variables (wavelength, frequency, velocity, displacement, amplitude, period).

Core Concepts: Characteristics of transverse and longitudinal waves.

#### 38.  Electromagnetic waves

Description: Description of EM waves, properties, applications in modern communication systems and production of electromagnetic waves (Hertz’s experiment).

Core Concepts: Electromagnetic waves, its applications in communication, and elements of a communication system.

#### 39. Wave Equation

Description: Description of  wave equation.

Core Concepts: Progressive wave: wave equation

#### 40. Mobile Phone communication

Description: Explanation on working of mobile phones in transferring the information.

Core Concepts: Electromagnetic waves: Mobile phone communication

41. Analogue Signal and Digital Signal

Description: Differences  between Analogue Signal and Digital Signal.

Core Concepts: Analogue Signal and Digital Signal.

#### 42. sampling theorem

Description: Explanation on reconstruction of analogue signal.

Core Concepts: Analogue Signal and Digital Signal: Sampling theorem.

#### 43. EM waves: polarization

Description: Explanation on concept of polarization.

Core Concepts: Polarization of Electromagnetic Waves, intensity vs graph position.

#### 44. Emission Spectra

Description: Explanation about light emitted by excited gas atom of particular element.

Core Concepts: Atomic Spectra: Emission.

#### 46. Radioactive Decay, Decay equations and applications.

Core Concepts: Decay equations, applications of radioactivity and safety precautions.

#### 47. Newton's Law of Universal Gravitation

Description: Explanation on Newton's Law of Universal Gravitation.

Core Concepts: Universal Law of Gravitation.

#### 48. Gravity and orbital Mechanics

Description: Explanation on gravity and orbit mechanics

Core Concepts: Universal Law of gravitation, orbital velocity and centrifugal force.

#### 49. Satellite

Description: Explanation on different types of satellite and their applications.

Core Concepts: Satellites.

• Video on types of satellite
• Video on types of artificial satellite and their applications
• Quiz on satellites
• Simulation related to revolution of satellites around the earth
• #### 50. Satellite and communication

Description: Explanation of communication with the help of satellite.

Core Concepts: Space Technology Applications.

#### 51. Satellite and Earth observation

Description: Explains how Satellite observes Earth.

Core Concepts: Space Technology Applications.

#### 52. Remote sensing

Description: Explanation on remote sensing performed by satellite.

Core Concepts: Space Technology Applications.

#### 53. Satellite and Disaster

Description: Explanation on use of satellite for natural disaster in Japan.

Core Concepts: Space Technology Applications.

#### 54. Satellite and weather

Description: Explanation on use  of satellite to monitor weather.

Core Concepts: Space Technology Applications.

#### 55. Satellite and planet’s Health

Description: Explanation on how satellites help monitor Earth’s health.

Core Concepts: Space Technology Applications.

Description: Explanation on how satellite navigation systems work.

Core Concepts: Space Technology Applications.

#### 57. Satellite and agriculture

Description: Explains agriculture monitoring with satellite.

Core Concepts: Space Technology Applications.

#### 58. Satellite and image

Description: Explanation on how satellite helps to capture images and how to analyse the data.

Core Concepts: Satellite Data Analysis.

#### 59. Bhutan space week

Description: Creating awareness about space week.

Core Concepts: Annual space week in Bhutan (17th -21st February).