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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.
| 11801. |
What is elastic collision ? Give 1 example |
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Answer» Thank you.. Collision bw the two body is said to . .when the KE , linear momentum and potential energy remains conserved but the force envolved in this collision is conservative in nature. For example when a boy push another boy which is at rest then the force is applied on it . theorfore it is state in motion Collision in which momentum and K.E. Both are conserved is called elastic collision for eg. bouncing back of rubber ball when collide with wall |
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| 11802. |
State hooks law..?? |
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Answer» Stess/strain =k Hooke\'s law states that stress is directly proportional to strain under proper elastic limits Acc to Hooke\'s law, stress is directly proportional to strain.i.e. F=-kx |
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| 11803. |
Define simple pendulum and hence derive expression for its time period |
| Answer» If object like a pendulum is applied a force on it . So regular motion start on the pendulum.that is pendulum start moving, which is moving in 3 direction . | |
| 11804. |
Give experimental evidences in favour of kinetic energy |
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| 11805. |
Example of Doppler effect |
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| 11806. |
Find the unit vector of 3i+7j+4k |
| Answer» 3i+7j+4k/9+49+16 | |
| 11807. |
what is absolute zero?? |
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| 11808. |
On what factors bending of a cyclist will skid. |
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| 11809. |
On what principle a rocket with variable mass works. Only 1 mark questions |
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| 11810. |
The rounded off of 16.150 is A.) 16.15 B) 16.150 C) 16.2 D) 16 |
| Answer» A | |
| 11811. |
Give a example of physical quantity which have direction but that is scaler quantity . |
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Answer» Pressure and surface tension also Current |
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| 11812. |
What is geometrical meaning of angular momentum |
| Answer» It means the velocity of moving mass in an arc | |
| 11813. |
What is couple |
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| 11814. |
Sea breeze |
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| 11815. |
Harmonic motion |
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| 11816. |
What is null vector |
| Answer» It is zero vector there were no direction | |
| 11817. |
Why steel is more elastic than rubber |
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Answer» Ys=WL/A ls(1)Yr=Wl/A lr(2)On dividing (1)by(2)Ys/Yr=lr/ls {Ys=young\'s modulus of steel & Yr=young\'s modulus of rubber} {lr=length of rubber & ls=length of steel} Since lr>lsSo Ys>YrHence, steel is more elastic than rubber. Because their young modulus is greater than rubber |
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| 11818. |
What is macroscopic state variable |
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| 11819. |
Why phi in shm is costant |
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| 11820. |
Why mass does not changes according to change in place like change of place |
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Answer» Mass is the amount of matter present in it and it is independent from gravity .That\'s why mass doesn\'t change with change in place. Mass is universly fixed Because it doesn\'t depend on gravity. |
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| 11821. |
Difference between acceleration & retardation |
| Answer» Acceleration is rate of change of velocity. But when acceleration is negative then it is called retardation.. | |
| 11822. |
What is simple harmonic motion? |
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| 11823. |
What is simple harmonic motion |
| Answer» A nation in which particle moves to and fro with a restoring force directed towards mean position and directly proportional to the displacement of particle | |
| 11824. |
Diff b/t stress and strain |
| Answer» Stress is force acting per unit area and strain is change in quantity by original | |
| 11825. |
Bernaulli principle |
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| 11826. |
What is the use of different formulas for measuring the kinetic energy of a rotating body? |
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| 11827. |
Define center of mass |
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Answer» It is that point where the mass of of whole body is supposed to be lied. It is the. As well as midpoint of body where whole body feel force and external force applies hair Centre of mass is the point from where you can control the whole mass and motion of an object |
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| 11828. |
How many types of force? |
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| 11829. |
What is ESCAP velocity |
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Answer» The maximum force required to escape out the object from earth is called escape velocity. 11.2m/s 11.2km |
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| 11830. |
Pgl k bache newton |
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| 11831. |
State and explain work energy principle |
| Answer» ACC. To work energy principle the work done is equal to the change in kinetic energy | |
| 11832. |
How many light years make 1 par sec? |
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| 11833. |
Derive stokes law |
| Answer» Tumhare physics vale sir se puch | |
| 11834. |
Define centre of gravity |
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| 11835. |
Which formula is most important in chapter gravitation |
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Answer» Arr dattt jya chhore Aree vohi jo tuje pta nhi h |
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| 11836. |
why 2nd law of motion is called real law of motion |
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| 11837. |
What is strass |
| Answer» The force on body acting per unit area | |
| 11838. |
Define spring in parallel Combination. |
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| 11839. |
If you thrown a stone upwards in moving train will it come back to your hands or not why |
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Answer» No ravi you are wrong what silly answer you have given(?? it will not come in our hands because the train is continues moving, our position change as the train is moving but the stone is thrown upward in air its position don\'t change and fall back at same place& that time we travel some distances. Definately it will come bacj to your hands It depends on the speed of train |
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| 11840. |
why dolphins moves up and down in sea ? |
| Answer» Motion is created by Dolphin\'s tail moving up and down in sea. Dolphins are different from fishes as fish moves sideways to swim while dolphins moves up and down due to the motion created by their tail. | |
| 11841. |
Explain bamalleios therorem |
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Answer» Your ans is right ritika but sum of Pressure + K.e + P.e = constant, At total path energy per unit volume hona chaiyea. It states that sum of pressure energy, kinetic enery and potential energy of an ideal fluid remains constant along a streamline or we can say Bernoulli\'s theorem is nothing but the conservation of energy. Bernoulli\'s theorem states that the pressure of given mass of an ideal gas is inversely proportional to its volume at a definite temperature. |
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| 11842. |
Derive the ascent formula of capillary tube?? |
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| 11843. |
How many Union territories in world |
| Answer» 7 | |
| 11844. |
Difference between sq m and m sq |
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| 11845. |
Relation between velocity frequency and wave length? |
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Answer» S=d/tSimilarly wavelenght is also a distance so we can write V=lamda÷time SimilarLy V=Lamda × 1÷ Time As we know 1 ÷ t is frequency So we can write V= lamda× frequency Wavelength=velocity /frequency |
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| 11846. |
What units have 10marks? |
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| 11847. |
Stokes law |
| Answer» 1.Stokes law is used in the determination of electronic charge2.stokes law found that the backward dragging force F acting on a small spherical body of radius r , moving through a medium of coefficient of viscosity n(ETA) is given by F=6πnrv | |
| 11848. |
Difference between frequency and wave length |
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Answer» Tq SI unit.frequency=Hertz or sec^-1wave length = meter frequency =no. of cycle completed per secondwave length=distance b/w 2 consecutive crest or trough |
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| 11849. |
Anjali please tell me escape velocity minimun to projectile a body out from the earth surface |
| Answer» 11.2 km/sec | |
| 11850. |
Why leaf was sink in winter explain briefly |
| Answer» Becoz in winter the quantity of water is more as compared in summer in leaf | |