# 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...
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...
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...
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...
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...
Answer: (b) No Change There will be no change in deflection because the revised structure is still a wheat stone bridge.A Wheatstone bridge...
We are given a hanging mass that is pushed by a force at a certain angle. To compute this force when the mass is in equilibrium, we first build...
Answer: d) Position vector Acceleration =0, Velocity = Speed = constant As the position of particle changes with time so position vector is...
The component of the velocity of the ball relative to the elevator is In the x-direction, the component of velocity is vx = 4cos300=2√3m/s In...
In a circular orbit with a diameter of 1A, an electron revolves around a proton. If we are asked to calculate the angular velocity of a proton...