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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.
| 7801. |
What is Aristotle\'s Fallacy?Can any one help it out.#laws of motion |
| Answer» Aristotle was an Greek scientist and Aristotle\'s fallacy states that, "an external force is necessary to keep a body in motion". | |
| 7802. |
What is Newton second law |
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Answer» F=ma S=ut+1/2at2 Rate of change of momentum impacted to a body is directly proportional to the external unbalanced force Rate of change of momentum imparted to a body is directly proportional to the external unbàl The rate of change of momentum of a body is directly proportional to the applied force. |
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| 7803. |
Bionomial theorem |
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| 7804. |
how i can diffine the centre of mass |
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| 7805. |
Why does only the center of Earth has force |
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| 7806. |
What is the value of planks constant? |
| Answer» 6.626070040(81)×10−34 J⋅s | |
| 7807. |
Method to find differentiation |
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| 7808. |
What is a expression of velocity of recoil of gun |
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| 7809. |
What is moment of inertia? Give some examples. |
| Answer» Moment of Inertia can be defined as the second moment about a point is called as its moment of inertia about that point.In cicular motion, mass is replaced by moment of inertia. | |
| 7810. |
What is absolute error |
| Answer» Absolute error: Magnitude of difference between true value and the individual measurement value is called absolute error of measurement. | |
| 7811. |
Realtion between surface tension and surface energy of liquid |
| Answer» Tension=surface energy/length | |
| 7812. |
What is sin 36.9 and sin 53.1 and cos 36.9 and cos 53.1 |
| Answer» sin 36.9=0.60042sin 53.1=0.79968cos 36.9=0.79968cos53.1=0.60042you would have to study taylors or maclaurin series to find these values which you will study in higher education like btech 1st year. | |
| 7813. |
What is the angle between action and reaction? |
| Answer» As per Newton\'s third law of motion -For every action there is an equal and opposite reaction so action force is force acting in one direction. Reaction force is force acting in the opposite direction. Angle between them is 180 degrees as these forces work in a straight line and opposite directions. | |
| 7814. |
If a player throws a ball with initial speed 29 m/s. Change it into km/hr. |
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Answer» 29m/=104.4km/hrSolution-. 29×18÷5 29m/s=29*10-3/(1/3600)=29*3600/1000=104.4Km/hr 8.0 kmph |
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| 7815. |
How to derive v^2-u^2=2as in Calculus method? |
| Answer» a=dv/dt, dv/dt×dx/dx, a=vdv/dx [dx/dt=v] adx=vdv , integrating dx by limit 0 to s and dv by limit u to v , a(s-0)=1/2 (v^2-u^2), from this as=1/2 (v2-u2), v2-u2=2as | |
| 7816. |
Bernoulli principal |
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Answer» the above statement isnt correct. i would like to clarify this:Bernoulli theorem states that the total energy(sum of kinetic+pressure+potential energy) associated at a particular point is constant. This principle states that if pressure of fluid increases then its velocity decreases. |
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| 7817. |
What are polar satellites and what are its uses? |
| Answer» A polar orbiting satellite closely parallels the earth\'s meridian lines, thus having a highly inclined orbit close to 90°. It passes over the north and south poles each revolution. As the earth rotates to the east beneath the satellite, each pass monitors an area to the west of the previous pass at intervals of roughly 90 to 100 minutes. These strips can be pieced together to produce a picture of a larger area.Uses: monitoring the weather, observing the Earth’s surface, military uses including spying. | |
| 7818. |
What are the uses of geo stationary satellites? |
| Answer» A geostationary satellite is an earth-orbiting satellite, placed at an altitude of approximately 35,800 kilometers directly over the equator, that revolves in the same direction the earth rotates (west to east).Uses: Direct broadcast TV, Communication network, Defense and intelligence, global positioning or GPS - which is used for satellite navigation systems | |
| 7819. |
How to complete physics In 2months if I use arihant only |
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| 7820. |
Derive E=mc^2 |
| Answer» sorry you have to study the concept of relativity to prove the above famous\xa0relation given by einsteen which you will study in higher class after intermediate | |
| 7821. |
How do solve the parallel axis theorem |
| Answer» parallel axis theorem states that the moment of inertia about any axis is equal to the sum of moment of inertia about its centre of gravity and product of area and sqaure of pependicular distance from centre of gravity.ie.,\xa0Iaa= Ig\xa0+ Ah2 | |
| 7822. |
Why does a gun recoil?Derive the recoil velocity of a gun? |
| Answer» It recoils due to conservation of momentum of system.Iniatial momentum of gun = Final momentum of gun\xa00 = m1v1 + m2v2{tex}v_2 = -{m_1v_1 \\over m_2}{/tex}(-ve sign because velocity of gun is in opposite direction of bullet){tex}\u200b\u200b\u200b\u200b\u200b\u200b\u200bRecoil \\ velocity = -v_2 = {m_1v_1 \\over m_2}{/tex}Where\xa0m1 and m2 are masses of bullet and gun respectively\xa0v1 and v2 are velocity of bullet and gun respectively | |
| 7823. |
V=rw vector form |
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| 7824. |
If the earth stops rotating then how the acceleration due to gravity at the equator will change |
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| 7825. |
What is the real motion |
| Answer» It is a motion that can be moved in any which direction that it mass of force is pulling. | |
| 7826. |
Calculate the volume occupied by 8.8 g of co2 at 31.1°c and 1bar pressure. |
| Answer» Pv=nRT, Pv=mRT/M, v=mRT/MP; here m=8.8g, R=0.083, T=304.1K, P=1, M=44g.,,, ,, v=8.8×0.083×304.1/44::v=222.11464/44, v=5.04806 | |
| 7827. |
Describe newton\'s first law |
| Answer» It states that a body at rest will tend to be at rest or a body in uniform motion will tend to be in uniform motion unless and until external force is applied . | |
| 7828. |
If the error in measurement of radius of sphere is 2%what will be percentage error in volume? |
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Answer» Volume of sphere =4/3*22/7*r^3=3*2%=6% % error in radius of sphere =2%. volume of sphere =4/3×πr^3∆r/r=3×4/3×∆r/r∆r/r×100=4[∆r/r×100]∆r/r×100=4×2∆r/r×100=8% |
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| 7829. |
Give me Blue print according to chapter |
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| 7830. |
at what angle that body should projected to reach maximum distance |
| Answer» 45° | |
| 7831. |
Collision in 1 dimension explain |
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| 7832. |
Experession for potential energy of an elastic spring |
| Answer» 1/2 k(x)2 where k is spring constant | |
| 7833. |
What is surface tension? |
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| 7834. |
What are the factors that affected rotational motion !?? |
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| 7835. |
What is rotational analogue of force? Give it\'s si unit? |
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Answer» Torque, newton metre Torque, joule |
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| 7836. |
Prove dimensionally that lamda is proportional to height÷mass×velocity |
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| 7837. |
in a fly wheel most of the mass is concentrated at the rim? Explain why? |
| Answer» May be duu to center of mass | |
| 7838. |
3rd and 2nd law realtion |
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| 7839. |
what is meaned by RMS speed that is root meen square speed ? why it has found ? |
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| 7840. |
P represents pressure, C represents speed of |
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Answer» C represent speed of light Speed of light |
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| 7841. |
Why restoring force is negative |
| Answer» Force is a constant of spring .-ve sign show the restoring force. Force is directly proportional to displacement | |
| 7842. |
what is linear momentum |
| Answer» Linear momentum is a vector quantity defined as the product of an object\'s mass, m, and its velocity, v. Linear momentum is denoted by the letter p and is called “momentum” . The body\'s momentum is always in the same direction as its velocity vector.p=mvSI unit\u200e: \u200ekilogram meter per second kg⋅m/s | |
| 7843. |
When K. E. Is zero on throwing object upward or downward |
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Answer» K.E is zero on throwing object in upward direction Upward ⬆⬆⬆⬆ it is calculated by the mechanism energy When we throw object upward |
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| 7844. |
Using triangle law of vector addition prove that A+(B+C) =(A+B)+C . |
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| 7845. |
What is hydraulic lift |
| Answer» It is a device used for carrying passengers or goods from one floor to another in multi stored building to raise heavy object. | |
| 7846. |
What is Banking Of Road |
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| 7847. |
english reflection text |
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| 7848. |
What does the slope of velocity time graph represent ? |
| Answer» Acceleration | |
| 7849. |
Explain banking of road??? |
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| 7850. |
What is position vector ???? |
| Answer» Used to defined the position of a point in a plane or space | |