Physics is one of the branches of Science and also the most fundamental scientific disciplines. Physics helps in understanding everyday activities such as answering questions like why the sky is blue, what makes us walk easily on roads, why is it important to have a moon, etc.

From the above-mentioned examples, it becomes clear that Physics concentrates in explaining the behaviour of the universe, force, and matter and their effects. Physics has helped in developing new technologies and in many inventions.

Physics as a subject is further divided into branches which include Modern Physics, Classical mechanics, Astrophysics, Nuclear Physics, Electromagnetism, and Optics. These branches are further divided into sub-topics and most of these topics are covered in school syllabus. 

Class 11 includes concepts like Units and measurements, Kinematics, Gravitation, Oscillation and Waves, Thermodynamics, Laws of Motion, Work, Power, Energy, and Particle movement. 

Class 12 includes concepts such as Magnetism, Electromagnetism, Optics, Current electricity, Electrostatics, Dual nature of radiation, and Electronic devices. 

We know that all these concepts have major questions that are covered in textbooks which are either descriptive or problematic. Here, at BYJU’S students will find questions that are descriptive as well as concept based. Questions explained here includes examples, properties, principles, types, and definitions.

The standard SI unit for pressure measurement is the Pascal (Pa) which is equivalent to one Newton per square meter (N/m2) or the KiloPascal...
Newton's first law states that every object will remain at rest or in uniform motion in a straight line unless compelled to change its state by...
An attachment, connected with the armature of a motor or dynamo, through which electrical connection is made and which ensures the current flows...
The light consists of a single wavelength is called monochromatic light and the light consists of a broad range of wavelengths is called...
The tidal hypothesis is one of the modern hypotheses of the origin of the earth and the solar system. Jeans postulated his hypothesis on the...
An electric motor is a device used to convert electricity into mechanical energy opposite to electric generator. They operate using principles of...
The volume of a cylinder = cross-section area x length of the cylinder. Let L= length of the cylinder. So, volume of cylinder, is: V = (Pi x r^2)...
Object at infinity is a fancy way of saying that all the light rays coming from the object are parallel(almost) to each other. To draw the object...
Reverberation is the persistence of sound after the sound source has been stopped. It results from a large number of reflected waves which can be...
The vital force theory was put forward by Swedish chemist BERZELLIUS in 1815. According to this theory, organic compounds could be produced only...

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