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This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 11651. |
Centre of mass of a system of two particles? |
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| 11652. |
Centre of mass of a system of ywonparticler |
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| 11653. |
When particles are of equal masses? |
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| 11654. |
What is the centre of mass? |
| Answer» the center of mass of a body is the point where the whole mass of the body supposed to be concentrated | |
| 11655. |
Prove binding energy |
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| 11656. |
Why the value of alpha is more for ionic solids than that for non-ionic solids? |
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| 11657. |
Derivation of MOI sphere |
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| 11658. |
why do we use screw driver with long handles |
| Answer» Because torque =force ×perpendicular dist. T=F×rTorque is directly proportional to rAs r inc torque also inc Hence less force provide big torque And it made easier to use. | |
| 11659. |
Define system and surrounding |
| Answer» An assembly of very large no. of particles having certain value of temp. Pressure and volume known as system. Everything outside the system which can have direct effect on it known as surrounding. | |
| 11660. |
Why polar satellites are not used for communication ? |
| Answer» Because polar satellites rotate around pole to pole. | |
| 11661. |
Why do we use thin needle for injection instead of a thickness |
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| 11662. |
Law of continuity |
| Answer» a1v1=a2v2Then,AV=constant | |
| 11663. |
explain working of carnot engine |
| Answer» Firstly it goes on source (T1)which is hot where isothermal expansion of gas takes place then secondly it goes on insulator where adiabatic expansion takes place then it goes on sink (T2) which is cold on which isothermal conpression of gas takes place and again it goes on insulator on which adiabatic compreesion takes place .It is cyclic process.... | |
| 11664. |
At what path of projectile velocity is minimum and max.? |
| Answer» Projectile velocity is minimum at the highest point because there the vertical component of velocity becomes zero and it is maximum at the starting and the end points. | |
| 11665. |
Draw position time graph for an object moving with constant acceleration |
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| 11666. |
How many beat our heart beats in one second and why?Answer with suitable reason. |
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Answer» Our heart takes 0.8 sec for one beat and completes 72 -75 beats in one minute allowing 5ltr of blood to flow through it in one minute. Our heart beats 72 times per minute. So heart beat per second=72/60=1.2 times =1 time approx. |
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| 11667. |
What is Kepler |
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| 11668. |
Venturimeter |
| Answer» Venturi meter is a device that is used to measure the flow/speed of a fluid in a pipe. | |
| 11669. |
What is venturimetre |
| Answer» Venturimeter is a gauge used for measuring the rate of flow of a liquid when the motion of fluid is steady. | |
| 11670. |
At what height when a body is thrown up potenttial energy is equal to kinetic energy? |
| Answer» When the object is thrown up the kinetic energy will become zero when it reach it\'s maximum height and the potential energy become maximum and then it starts to fall now the potential energy start\'s to reduce and kinetic energy start\'s to increase . The kinetic energy become equal to the potential energy at the midpoint of the journey | |
| 11671. |
Agxjdhdhd |
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| 11672. |
Proof of excess of pressure inside a bubble |
| Answer» P=4s/R | |
| 11673. |
Adhesive |
| Answer» A substance used for sticking objects or materials together is known as adhesive. For example -glue,paste,cement,etc. | |
| 11674. |
What do u mean by gravity |
| Answer» Gravity is the force of attraction b/w the earth and any object lying on its surface | |
| 11675. |
Some basic things about Work,Energy and Power |
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| 11676. |
Explane surfase tension . |
| Answer» It is the property of liquid by virtue of which the free surface of liquid at rest behaves like an elastic stretched membrane tending to contract so as to occupy minimum surface area. | |
| 11677. |
What is monment of imerti? |
| Answer» Moment of inertia states that a body can be rotated about a given axis. | |
| 11678. |
What is moment of force |
| Answer» It is the measure of the capacity of the force to produce twisting and turning effect about an axis. | |
| 11679. |
[T] - [T]= ? |
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Answer» [T] T |
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| 11680. |
Why the paths of planet elliptical |
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| 11681. |
Limitations of Bernoulli\'s theorem |
| Answer» 1. It applies ideally to the fluids with zero velocity or non-viscous fluids but not to the viscous fluids.2. It is also stated that the kinetic energy remains constant throughout the tube but it is not so as some energy gets lost as heat.3. While deriving the Bernoulli\'s theorem it is assumed that the velocity of the liquid that is flowing in the tube is equal/ constant at all parts but practically it is not correct too. | |
| 11682. |
State and prove work energy theorem analytically. |
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| 11683. |
Adiabatic compresion |
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| 11684. |
Newton first law define |
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Answer» Every object remain in rest or in motion unless and until an external force is applied to it The tendency of an undisturb object to stay at rest or to keep moving with the same velocity is called the first law of motion |
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| 11685. |
Explain i shaped girder |
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| 11686. |
Does the angle of banking depend upon mass of the vehicle |
| Answer» Yes | |
| 11687. |
Variable value of \'g\' |
| Answer» 9.8m/s | |
| 11688. |
Which are the important derivations & proof according to exam point of view in Physics? |
| Answer» More than 100 | |
| 11689. |
Passion ratio |
| Answer» It is ratio of lateral strain to longitudinal strain | |
| 11690. |
Elastic fatigue |
| Answer» Elastic fatigue woh cheez hoti hai kisi bhi cheez ko baar baar istemaal karne se uski elasticity kam ho jaati haiExp--- purani bridge ko baar use karne se uski elastic fatigue kam ho jaati hai woh kabhi bhi toot sakti hai..... | |
| 11691. |
Moon travellers tie heavy weight at their back before landing on the moon. |
| Answer» by this astronaut mantain his weight | |
| 11692. |
Poisson\'s ratio |
| Answer» P.r.=-∆r×l/R ×∆l | |
| 11693. |
Define the term elasticity |
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Answer» The property of a body to regain its original shape and size after removing deforming forces A body is said to be elastic if it get changes into its original position after the removal of deformimg force and this property of solid bodies is called elasticity. |
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| 11694. |
Difference between gravity and gravitational force |
| Answer» Gravity is the attractive force b/w earth or any object lying on or near its surface whereas gravitational force is the force of attraction between any two bodies.Gravitational force is the weakest in the four forces. | |
| 11695. |
What is up thrust force |
| Answer» The upward force acting on a body when it is immersed in a liquid is called upthrust or buoyant force. | |
| 11696. |
How life is possible to breath to the surface of ice |
| Answer» Because it also have oxygen. | |
| 11697. |
Elastic one dimensional collision |
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| 11698. |
What is reference frame |
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Answer» I can\'t understand ur question.... plzzz explain correctly Place were we can say that the object is at motion. |
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| 11699. |
Teri ma ki Jai bolo |
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| 11700. |
Why is pressure and velocity are not directly proportional ? Give brief explanation. |
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