# 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: There are multiple reasons behind hydroelectricity being preferred over thermal power: It is a clean source of energy. It is a...
If the doping concentration is low, the breakdown in a reverse biassed PN junction diode will most likely occur due to the buildup of the greater...
The coefficient of friction is represented as μ. The frictional force is divided into horizontal and vertical components. Those are λsinθ and...
The potential energy U of a body of mass m at a height h above some reference point is given as U=mgh --(1) Where g is the acceleration due to...
Given, the charge stored by the capacitor is Q and voltage is V. Let the capacitance of the capacitor is C. The capacitance of a parallel plate...
Speed in still water is 5 km/h Let the velocity of the river be m km/h Width of the river is 1 km and time taken is 15 minutes, that is 14...
Here, we will use the relation between the horizontal range R, acceleration due to gravity g, initial speed u and the maximum height H, which is...
The angular momentum L of the particle is given by L=mr2w where w=2πn. ∴ Frequency n = w/2π Further i = q × n = wq/2π Magnetic Moment, M =...
Known resistance, R = 5Ω Initial unknown resistance = RΩ New balancing point L = 1.6l1 We have, R/L = S/100−L--------- 1 Where, R is...
Tangential acceleration refers to the force acting along the tangent. This is commonly referred to as at. The magnitude is given by at=R, where R...
By using Ohm’s law V=IR we can find the value of current flowing in the circuit Here we have the value of potential difference 120V. In LR...
By using the Biot-Savart law B = μ0NI/2R We can find a formula for current carrying straight wire to find the maximum magnetic strength, that...
Answer: A. Angular velocity of the body The moment of inertia is the quantity that determines how much torque is required for a given angular...
Given parameters are: Number of turns n=500 area A = 4cm2 = 4×10−4m2 resistance R = 500Ω magnetic field B = 0.2wb/m2 We have to calculate...
The current flowing through the coil is proportional to the deflection, or angle of twist, of the suspension. The formula for a galvanometer's...
The capacitive and inductive reactances are equivalent at resonance. The inductive reactance will be stronger than the capacitive reactance above...
Consider Ampere’s Law, which is given as ∮ B.dl = μ0Ienc. Due to symmetry, the magnetic field at any point which lies on line CD will be equal,...
We'll start by assuming that it's been two hours since the first cab left X. Consider one taxi departing from Y at this precise moment; taxis...
Answer: b) Hematite The gravity separation technique is used to concentrate ore, as we all know. The gravity separation method is based on...
The gravitational potential due to any point mass is given by the formula, ⇒ V = −GM/r, where M is the mass r, is the distance from the...