Laws of Physics Concepts: Overview, Questions, Preparation

In Physics, there are numerous laws based on valid experiments and observations. Some of the most famous laws are Lambert's cosine law, Kelvin Planck statement, D'Alembert's Principle, Law of conservation of mass, Hubble's Law, Beer lambert law, van der Waals equations, Bell's theorem, Helmholtz equation, Maxwell relations, Raman scattering, Lagrangian point, Carnot's theorem, the law of conservation of energy, Mach number, coulomb's law, Ampere's law, etc. among other hundreds of laws.

At first, it was believed that the center of our universe is the earth, but later after a few more discoveries, it was said that the center of the universe is the sun, and soon we found out that it was wrong and hypothetical. The center of our solar system might be the sun, but not the universe.

There are plenty of other similar examples that lead to a dead-end. One of those includes the mysterious behavior of the planet mercury. Newton's universal law of gravitation stated and explained the behavior of all other planets except mercury. The orbit and the rotational period of the mercury are different from others, but later it was solved by Einstein's theory of relativity.

Some of the properties of Laws of Physics are listed below:

• The concepts are universal and can be applied everywhere.
• It is unaffected by external factors.
• It is stable
• It is omnipresent
• Homogeneous in nature
• It can hypothetically be reversed back in time.
• The representation is simple.

The chapter 'Laws of Physics' can be seen in both classes 11 and 12 and holds a significant weightage of 5 and 6 marks, respectively. It consists of objective type questions of 1 mark each, very short questions of 2 marks, and short questions of 3 marks.

Example 1) State five different Laws of Physics.

Answer – The laws of physics are as follows:

• Lambert's cosine law,
• Kelvin Planck statement,
• D’Alembert’s Principle,
• Law of conservation of mass,
• Hubble’s Law

Example 2) Write the types of laws of conservation.

Answer – The types of laws of conservation are as follows:

• Laws of Conservation of energy
• Conservation of linear momentum
• Conservation of angular momentum
• Conservation of electric charge

Example 3) State newton's second law of motion.

Answer – The second Newton’s law of motion states that the force is equal to the multiplication of mass and acceleration. It can be written as F = ma, where m is equal to mass, and a is the acceleration.

FAQs

Q: What do you mean by the Laws of Physics?

Q: What is the formula of Inertia?

Q: What is the Si unit of Inertia?

Q: What are the properties of Laws of Physics?

Q: What are the types of Inertia?