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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.
| 8301. |
assuming that earth orbit is circle of radius 1.5×10^8 km calculate mass of circle |
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| 8302. |
Value of boltzman\'s constant |
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Answer» 1.38×10^23 It is the ratio of universal gas constant to avagadro number |
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| 8303. |
What effect of humidity pressure and temperature on speed of sound |
| Answer» Humidity is directly proportional to speed of sound ....and temp. Is also directly proportional to temp. | |
| 8304. |
Why the clouds seem to be floating in the sky? |
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Answer» Because clouds are made up of water vapour. Thus they have some properties of water vapour like floating in atmosphere. ??? |
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| 8305. |
To measure diameter of a given wire using a screw gauge. Observation table calculation and result |
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Answer» Watch on YouTube ? |
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| 8306. |
At what temperature efficiency of carnot engine is 100%? |
| Answer» When T2 is 0 | |
| 8307. |
Graph of a freely failing body under acceleration time graph. |
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| 8308. |
Why the density of water is maximum at 4 degree c |
| Answer» When the ice melts to liquid water the structure collapse and the density of the liquid increase. At temperature well above freezing the molecular move faster and get further apart the density as temperature increases thus the density of water is maximum 4 degree c | |
| 8309. |
State the condition for the formation of stationary wave. |
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| 8310. |
What is gravitation constant |
| Answer» Gravitational force of attraction, F depends upon ratio of the product of mass of heavier body(M) and mass of lighter body(m) & square of the distance between them (r^2). So, F=GMm/ r^2 where G is the gravitational constant. ? | |
| 8311. |
Simple pendulum |
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Answer» Ok A simple pendulum is a pendulum which moves in to and fro motion. |
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| 8312. |
Total energy of a particle moving in a horizontal circle? |
| Answer» Root over 5gr | |
| 8313. |
Best books for pcm subject for class 12 |
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| 8314. |
Define elasticity |
| Answer» Elasticity is the property by virtue of which a body can regain its original shape and size after the removal of deforming force. | |
| 8315. |
Passing marks in11th class |
| Answer» 23 | |
| 8316. |
relation between alpha beta gama |
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Answer» Beta = 2 alpha and Gama = 3 alpha Alpha beta gamma all that we are related to each other by the ratio of 1 ratio 2 ratio 3 and this can be fine by simply kinetic theory of molecular gases chapter we need to remember only that chapter of NCERT if you simply open the chapter you will get the answer |
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| 8317. |
Does vector addition hold for any two vector |
| Answer» Yes | |
| 8318. |
Limitations of first law of thermodynamics |
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Answer» 1)It does n\'t indicate the direction in which change occurs. 2.) The first law of gives no idea about the extent of change. 3.) It gives no information about source of heat .ie it hot and cold body. See there are two limitations of first law of thermodynamics that is first one is when when we get under the internal energy when we talk about the internal energy then it is an in that is an independent path that follows independent path but the other terms like work done and heat supplied are passed dependent totally this is the first first limitations that was not proved that how can we get an undefined pass by to define parts and other one is I cannot be found that I don\'t know about the second one |
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| 8319. |
Derivation of Doppler effect |
| Answer» Hey I think there\'s no Derivation for doppler\'s effect but we can say that it has a formula of Apparent frequency that is equals to the speed of velocity of sound minus the velocity of observer upon velocity of sound - the velocity of source into frequency which is produced by the source | |
| 8320. |
Give the difference between isothermal process and adiabatic process |
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Answer» In isothermal process the temperature is constant whereas in adiabatic process the del-ccu is constant and in isothermal process the process is slow and in adiabatic process the process is sudden Isothermal processs1.exchange of heat in sys to surr 2. Transformation slow 3 . Temp remains constant but in adiabatic process 1.no exchange of heat in sys &surr 2.transformation fast 3. Temp varing Isothermal process is defined as the process in which temperature is constant and adiabatic process when there is no heat exchange between the system and the surrounding. |
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| 8321. |
Bernelius theorem |
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Answer» Bernoulli\'s theorem simply status about the conservation of energy that\'s it It states that addition of kinetic energy ,potential energy and pressure energy is constant..... |
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| 8322. |
How to find buoyancy force |
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| 8323. |
If energy in neither be created nor be destroyed then how the universe born |
| Answer» Bcoz of god. | |
| 8324. |
A person spoked something but have an echo after 5 seconds what is the sound is 346m/s^2 |
| Answer» 346×5=1234 | |
| 8325. |
Prove that newtons 2 law of motion is the real law of motion |
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| 8326. |
Adiabatic relation between p and v,also relation between p and t |
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| 8327. |
Mass defect |
| Answer» Anupam you really ask a great question mass defect is a phenomenon that is used in the nuclear reactors on the hydrogen bombs and whenever amount of one of the mass that should be in the reactor becomes low or becomes small then this phenomena cause and due to this they are large explosions in hydrogen bomb | |
| 8328. |
If gravity |
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| 8329. |
The (v-t) graph moving two partical in make and angle30°and45° |
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| 8330. |
Show that newton\'s second law is real law of mechanics |
| Answer» This question came to the various papers and answer for this question is second law is real law as we can prove The Law of Inertia using second law that is if we don\'t apply the force mass into acceleration will be zero and as mass cannot be zero so acceleration is zero that is the Law of Inertia and laugh reaction that is the third law can be proved If force applied by the object 12 the object to will be equal to minus force applied to the object to buy the object 1 or 1 by the object to that was opposite to the for German and as F1 to will be equal to minus f 21 | |
| 8331. |
What factors centre of mass of body depend |
| Answer» Structure of the body, concentration of mass/area. | |
| 8332. |
L=iomega question mean |
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| 8333. |
Black |
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Answer» Bhai puchhna kya chahte ho Good conductor of hest Black-kaala |
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| 8334. |
Derivatives the equation of motion by graphical method & calculated method |
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| 8335. |
Why does acceleration decreases while velocity increases inAHM? |
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| 8336. |
What is SHM? Daily life examples? |
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Answer» E.g..1motion of plucked string sitar;2.motion of earth around sun 3.motion of simple pendulum The motion in which restoring force is directly proportional to displacement but opposes it is called simple harmonic motion It is a type of motion in which a body moves in to and fro motion about its mean position He |
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| 8337. |
How can we find velocity root mean square of oxygen weighing 32 |
| Answer» Vrms=sqrt3RT/M | |
| 8338. |
Are you all ready for final exam |
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Answer» I m also Yes,ya,haan,bilkul |
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| 8339. |
Thermidynamics |
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| 8340. |
Moment of inertia of ring |
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| 8341. |
Open and close pipe |
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| 8342. |
Water equivalent???? |
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Answer» W=smWhere s=specific heat m=mass The product of a mass of the body by its specific heat equal numerical toh the mass of water that is equivalent in thermal capacity to the body in question |
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| 8343. |
Si unit of street |
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| 8344. |
Si unit of stress |
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Answer» Or the si unit of stress is Pascal/ (pa) The si unit of stress is called newton per square meter |
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| 8345. |
What is the reason for gas thermometers which are more sensitive then mercury thermometers? |
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| 8346. |
Derivation for expression of pressure |
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| 8347. |
Parallel axis theorem derivation? |
| Answer» see in ncert part 2 ch 7 | |
| 8348. |
Difference between tone and node |
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| 8349. |
What is acceleration due to gravity and universal gravitational constant |
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| 8350. |
Doplers effect |
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Answer» The apparent change in frequency when the observer, the medium and the source are in relative motion is known as Doppler effect The phenomenon of variation of sound wave due to relative motion between the sound and the listener is called as dopler\'s effect. According to dopler whenever there is a relative motion between source and lishner then the apprent frequency heard by the lishner is always different from the original frequency emmited by the source |
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