Physics — Physical Component
Overview
Physics forms a core part of the Science section in TS TET Paper II, targeting teachers for classes VI–VIII. This component tests your understanding of fundamental physical concepts that upper primary students encounter: force, motion, energy, heat, light, sound, electricity, and magnetism. Questions typically assess conceptual clarity rather than heavy calculations, so focus on understanding principles, definitions, and real-life applications.
Expect 8–12 questions from Physics in the Mathematics and Science paper. The examiner often frames questions around everyday phenomena—why a ball stops rolling, how a mirror forms an image, why metals feel cold. Mastering this section requires you to think like a teacher explaining concepts to a 12-year-old: simple, clear, and connected to daily life.
Key Concepts
• **Force changes motion or shape**: A force can start, stop, speed up, slow down, or change the direction of a moving object. It can also change an object's shape (stretching a rubber band).
• **Friction opposes relative motion**: Friction acts between surfaces in contact and always opposes the direction of motion. It depends on the nature of surfaces and the normal force, not on the area of contact.
• **Energy is conserved but transforms**: Energy cannot be created or destroyed—only converted from one form to another. A swinging pendulum converts potential energy to kinetic energy and back.
• **Heat flows from hot to cold**: Heat transfer occurs through conduction (solids), convection (fluids), and radiation (no medium needed). Temperature measures the degree of hotness; heat is the total energy transferred.
• **Light travels in straight lines**: This explains shadows, eclipses, and pinhole cameras. Reflection follows the law: angle of incidence = angle of reflection. Refraction bends light when it changes medium.
• **Sound needs a medium**: Sound is a longitudinal wave requiring a material medium (solid, liquid, or gas). It cannot travel through vacuum. Speed of sound is highest in solids, lowest in gases.
• **Current flows in a closed circuit**: Electric current is the flow of charges. A complete circuit with a source (cell/battery), conductor, and load is needed. Conductors allow current; insulators block it.
• **Magnets have two poles**: Like poles repel; unlike poles attract. A freely suspended magnet aligns north-south. Electromagnets are temporary magnets made by passing current through a coil.
Formulas / Key Facts
**Force and Motion**
- Force = Mass × Acceleration (F = ma) — relates force to mass and rate of velocity change
- Pressure = Force ÷ Area (P = F/A) — smaller area means greater pressure for same force
- Work = Force × Distance (W = F × d) — work done when force moves an object