# Physics Questions

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.

Answer: (3) Muscular force is the force produced by the use of muscles. Muscular force occurs as a result of contraction of the muscle which
Answer: During the sunrise the sun is set close to the Earth's horizon, and therefore light travels a longer distance through the atmosphere of
Answer: Newton’s second law of motion can be stated as the acceleration of an object as produced by a net force is directly proportional to
Answer: Polarization, in Physics, is defined as a phenomenon caused due to the wave nature of electromagnetic radiation. The difference between
Answer: Given parameters: A particle of mass m is located in a one-dimensional potential field and Potential energy (P.E) = V(x)=A(1−cos
Answer: (1) A concave mirror is used in the case of shaving mirror because when the concave mirror is placed very close to the object, a
Answer: The electrical resistivity of a material is the measure of how strongly the material opposes the flow of current. The SI unit of
Answer: The tangent law of magnetism is a way of measuring the strengths of two perpendicular magnetic fields. When a magnet is exposed to a
Answer: (3) We know that: λ1= R(1/n12−1/n22) For last line Balmer's series, n1=2 and n2=∞ λ1=
Answer: (1) The velocity of the sound varies in the different medium as given below. Sound travels in solids at a rapid rate than air, fluid or