Physics 9

Define the terms theory and law. Also, give two examples of each.

Theory: A well-substantiated explanation of some aspect of the natural world that is based on a body of evidence. Examples: Theory of Relativity, Kinetic Molecular Theory. Law: A statement that describes a consistent and universal observation in nature. Examples: Newton’s Law of Motion, Law of Conservation of Energy. Related Questions: Define the following branches of … Read more

Define the following branches of physics:

Biophysics: It is the branch of physics that applies the principles of physics to biological systems. Astrophysics: It deals with the study of celestial objects and the physical processes occurring in space. Optics: It is the branch of physics that studies the behavior of light and its interactions with matter. Relativistic Mechanics: It studies the … Read more

SEPARATION TECHNIQUES

Related Questions: Kinematics-mcq Q.1 How does physics play an important role in our life? Q.9 What precautions should be kept in mind while taking measurements using a measuring cylinder? Q.10 Why do we need to consider significant digits in measurements? Q11. How random error can be reduced? Q12. Differentiate between precision and accuracy. Q.1 Define … Read more

Related Questions: Kinematics-mcq Q.1 How does physics play an important role in our life? Q.9 What precautions should be kept in mind while taking measurements using a measuring cylinder? Q.10 Why do we need to consider significant digits in measurements? Q11. How random error can be reduced? Q12. Differentiate between precision and accuracy. Q.1 Define … Read more

Related Questions: Kinematics-mcq Q.1 How does physics play an important role in our life? Q.9 What precautions should be kept in mind while taking measurements using a measuring cylinder? Q.10 Why do we need to consider significant digits in measurements? Q11. How random error can be reduced? Q12. Differentiate between precision and accuracy. Q.1 Define … Read more

Q7. Look at the figure of screw gauge, let a small steel ball is place between its thimble and anvil then:

Look at the figure of the screw gauge, let a small steel ball is place between its thimble and anvil then:         a. What is its main scale reading? b. What is the coinciding division of circular scale? c. Calculate the total diameter of the ball. Ans: a. The main scale reading … Read more

Q6. Look at the measurement of vernier calipers:

Look at the measurement of vernier calipers:             a. What is its main scale reading? b. What is its coinciding division on the vernier scale? Calculate the total reading on the vernier calipers. Ans: a. The main scale reading (reading to which zero of vernier scale coincides) is 2.5 cm. … Read more

Q5. What is pitch and least count of: a. Vernier calipers if the smallest division on the main scale is 1 mm and total divisions on the vernier scale are 20. b. Screw gauge if the smallest division on its main scale is 0.5 mm and its movable scale has 50 divisions.

What is pitch and least count of: a. Vernier calipers if the smallest division on the main scale is 1 mm and total divisions on the vernier scale are 20. b. Screw gauge if the smallest division on its main scale is 0.5 mm and its movable scale has 50 divisions. Ans: a. The least … Read more