Topic Details (Notes format)

Work, Energy, and Power

Subject: General Science

Book: NCERT Science Class 11

Work, energy, and power define how forces interact with motion.
- **Work Done**:
- W = F × d × cosθ (Force × displacement × angle).
- **Types of Energy**:
- Kinetic Energy (KE = ½mv²).
- Potential Energy (PE = mgh).
- **Law of Conservation of Energy**:
- Energy cannot be created or destroyed.
- **Power**:
- P = Work/Time (Rate of doing work).

**Possible Exam Questions:**
1. Define work and derive its formula.
2. What is kinetic energy? Derive its equation.
3. How does the law of conservation of energy apply in nature?
4. What is the SI unit of power? Give examples.
5. Explain why power is a scalar quantity.

Practice Questions

Which vitamin is responsible for blood clotting?

View Question

Which of the following is a fundamental force in nature?

View Question

What type of energy is stored in a stretched rubber band?

View Question

Which process converts glucose into energy in the human body?

View Question

Which is the smallest bone in the human body?

View Question

What is the chemical formula for carbon dioxide?

View Question

Which organ regulates blood sugar levels in the human body?

View Question

Which organ is responsible for detoxifying harmful substances in the human body?

View Question

What is the function of hemoglobin in the blood?

View Question

What is the SI unit of temperature?

View Question