PRINCIPLES OF CONDENSED MATTER PHYSICS Dr C C

PRINCIPLES OF CONDENSED MATTER PHYSICS Dr. C. C. SANGEETHA Assistant Professor in Physics School of Engineering &Technology Sri Padmavathi Mahila Visvavidyalayam (Women’s University) Tirupati-517501 Source video: https: //nptel. ac. in/courses/115106061/1

Reflection Spot �Question: what are the basic principles governing the condensation of disordered phases to progressively ordered phase which exhibits various range order? Answer: potential and kinetic energy associated to the phase of material. Thermal compressibility place an important role in phase transformation. Apart from that broken symmetry and defects also plays an role in transformation.

Learning By Doing Activity (Lb. D 1. 1) Lb. D 1. 1 : Q 1 Temperature is the measure of which form energy a) Potential Energy b) Kinetic Energy c) Total Energy d) none of the above Answer: b) Kinetic Energy Explanation: when we lower the temperature then K. E of gas gets decreases.

Learning By Doing Activity (Lb. D 1. 1) Lb. D 1. 1 : Q 2 The Crystal is formed at a) Critical point b) Single Point c) Triple point d) Frozen Point Answer: c) Triple point Explanation: During the transition process below to the critical point there is a point known as triple point where three phases gas, liquid and solid meet together. At this triple point, the liquid becomes a solid and ice crystals are formed in the case of water.

Learning By Doing Activity (Lb. D 1. 1) Lb. D 1. 1 : Q 3 Choose the odd property which represents the broken symmetry phases a) Rigidity b) Broken Symmetry c) Defects d) angular momentum Answer: d) Angular momentum Explanation: angular momentum is the quantity of rotation of a body, which is the product of its moment of inertia and its angular velocity.

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