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FAQs on Past Year Paper, Physics (Set - 4), 2016, Class 11, Physics - Additional Study Material for NEET

1. What are the basic principles of physics?
Ans. Physics is based on several fundamental principles, including the conservation of energy, Newton's laws of motion, the law of gravitation, and the laws of thermodynamics. These principles provide a framework for understanding and explaining the behavior of matter and energy.
2. What is the difference between scalar and vector quantities in physics?
Ans. In physics, scalar quantities are those that have only magnitude, such as mass or temperature. They do not have a specific direction associated with them. On the other hand, vector quantities have both magnitude and direction, such as velocity or force. Vector quantities are represented by arrows, indicating their direction.
3. What is the relationship between force, mass, and acceleration?
Ans. According to Newton's second law of motion, the force acting on an object is equal to the product of its mass and acceleration. This can be mathematically represented as F = ma, where F is the force, m is the mass, and a is the acceleration. This relationship shows that the force required to accelerate an object is directly proportional to its mass and the magnitude of the acceleration.
4. How does temperature affect the behavior of gases?
Ans. Temperature plays a crucial role in determining the behavior of gases. According to the kinetic theory of gases, as the temperature of a gas increases, its average kinetic energy also increases. This leads to higher molecular motion and faster collisions between gas particles. Consequently, the gas expands and exerts greater pressure on its surroundings.
5. What is the difference between speed and velocity?
Ans. Speed and velocity are both measurements of how fast an object is moving, but they have different meanings. Speed is a scalar quantity that refers to the rate at which an object covers distance, regardless of direction. On the other hand, velocity is a vector quantity that includes both the speed and the direction of motion. Velocity specifies not only the rate of change in position but also the direction in which the object is moving.
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