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Short Tricks for Revision: Physical World Video Lecture | Physics Class 11 - NEET

FAQs on Short Tricks for Revision: Physical World Video Lecture - Physics Class 11 - NEET

1. What is the physical world?

Ans. The physical world refers to the observable universe and all the natural phenomena that occur within it. It includes the study of matter, energy, forces, and their interactions.

2. What are the fundamental forces in the physical world?

Ans. The fundamental forces in the physical world are gravity, electromagnetism, strong nuclear force, and weak nuclear force. These forces govern the behavior and interactions of matter and energy.

3. How does gravity work in the physical world?

Ans. Gravity is a force that attracts objects with mass towards each other. It is responsible for the motion of planets, stars, and other celestial bodies. According to Einstein's theory of general relativity, gravity is the curvature of spacetime caused by mass and energy.

4. What is the role of energy in the physical world?

Ans. Energy is a fundamental concept in the physical world. It exists in various forms such as kinetic energy, potential energy, thermal energy, and electromagnetic energy. Energy is essential for all processes and transformations in the universe, from the movement of particles to the functioning of biological systems.

5. How do scientists study the physical world?

Ans. Scientists study the physical world through the scientific method, which involves making observations, formulating hypotheses, conducting experiments, and analyzing data. They use various tools and techniques, such as telescopes, microscopes, particle accelerators, and mathematical models, to understand and explain the natural phenomena in the physical world.

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Oct 14, 2025 Last updated

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96 videos|367 docs|98 tests

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