ICSE Class 11 Physics — Flashcards for Quick Revision

A: Physics comes from the Greek word 'fusis' meaning 'nature'. Science comes from the Latin word 'Scientia' meaning 'to know'. Physics studies nature and natural phenomena.

A: 1. Observation of facts. 2. Proposing a theory or hypothesis. 3. Testing the validity of the predictions. 4. Modification of the theory if necessary. This method helps science grow and improve with ne

A: Three main reasons explain this: 1. Regularity and symmetry exist even in complex phenomena. 2. Many different phenomena can be explained using a few basic laws. 3. Important features can be separated

A: A deforming force causes a change in the size, shape, or both of a body. That change is called deformation.

A: Elasticity is that property of the material of a body by virtue of which the body opposes any change in its shape or size when deforming forces are applied to it, and recovers its original state as so

A: Quartz is treated as an ideal example of a body that regains its original shape very well after deformation. Wax or wet clay is treated as an ideal example of a body that keeps its deformed shape and

A: A quantity linked to a physical phenomenon and subjected to measurement is called a physical quantity. Examples: length, mass, time, force, speed.

A: Physics depends on measuring quantities like distance, mass, time, force, and speed to describe natural phenomena clearly in numbers. Without measurement, description remains incomplete.

A: Length, mass, and time are fundamental quantities in mechanics. Their units are fundamental units because they cannot be derived from one another.