Answer the following questions :
Explain with a diagram : Kepler's three laws.

Answer the following questions : Explain with neat diagram the atmospheric pressure and its variation with the height from the sea level .

Answer the following questions: What is a ray diagram?

Answer the following questions: Explain the following terms: Ores

Answer the following questions: Explain with the help of a diagram how the intersity and direction of the magnetic field of a bar magnet can be determined.

Answer the following questions : Explain the term alkane with example.

Answer the following questions in detail: Complete the diagram:

Answer the following questions: Explain the following terms: Minerals

Answer the following questions: Explain the following terms: Gangue

Answer the following questions: Explain with any three examples how various forms of energy are interchangeable.

Answer the following questions: Explain the term balanced forces.