InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your Class 11 knowledge and support exam preparation. Choose a topic below to get started.
| 1001. |
Calculate the angle of 1° showing each step |
| Answer» | |
| 1002. |
Derivation of cp-cv=R |
| Answer» \tConsider one mole of an ideal gas enclosed in a cylinder fitted with the movable frictionless piston.Let the gas be heated at constant volume. On supplying dQ amount of heat, let the temperature\xa0of the gas increase by dT.\xa0\xa0 By first law of thermodynamics,\xa0 dQ = dU + dW = dU + PdV\xa0 CpdT = Cv\xa0x dT + RdT\xa0 At a constant pressure,\xa0 P.dV = R.dT\xa0\xa0 where Cp,\xa0Cv\xa0and R are in same units.\xa0 Hence, proved.\xa0\t\xa0 | |
| 1003. |
I. Dont understnnd physics |
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| 1004. |
Ncert example no. 8.2 |
| Answer» G | |
| 1005. |
Define velocity on the bases of wave ossilation ....And plz give me easy way to learn |
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| 1006. |
Specific heat capacity of solids |
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| 1007. |
Plzzz make me understand how to learn Thermal properties of matter |
| Answer» Try to understand the chapter read it and explain it to you | |
| 1008. |
What do you mean by measurement explain with example |
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| 1009. |
Steps in working of a nuclear power plant? |
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| 1010. |
Elastic energy |
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| 1011. |
What is forced oscillation |
| Answer» Oscillations of any object with a frequency different from its natural frequency under a periodic external force are called forced oscillations. | |
| 1012. |
Who was the inventor of gama??? |
| Answer» Gamma radiation or gamma ray is an extremely high-frequency radioactive radiation consisting of high-energy photons. It was first discovered by a French chemist and physicist, Paul Villard in 1900. It was named gamma ray by Ernest Rutherford in 1903.<br>PAUL VILLARD - gamma radiation DANIEL BERNOULLI - gamma (mathematics ) | |
| 1013. |
Show that a central force is conservative |
| Answer» | |
| 1014. |
Excess pressure exerted by liquid drop liguid bubble and soap bubble . |
| Answer» Excess pressure exerted by liquid drop is 2s/r and soap bubble is 4s/r | |
| 1015. |
by what percent kinetic energy of a body increase if it\'s momentum is 200 percent |
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| 1016. |
Lab manual ?? |
| Answer» | |
| 1017. |
Absolute zero of temperature in Celsius scale? |
| Answer» -273.5 kelvin<br>- 273* celcius | |
| 1018. |
Derive expression for projectile,s formula |
| Answer» | |
| 1019. |
Electric field and magnetic field has no any colour then why we see all seven colour ?? |
| Answer» What is bulk modelus | |
| 1020. |
What is doppler effect?? |
| Answer» the apparent change in the frequency of the sound when the source, the observer and medium are in relative motion | |
| 1021. |
Prove perpendicular and parallel axis |
| Answer» See ncert | |
| 1022. |
State the 1 law of newton why is it called real law of inertia |
| Answer» 2 law is known as real law, not 1 law | |
| 1023. |
Name the fundamental force which is responsible for the stability of the nucleus |
| Answer» Strong nuclear force which is 10^38 times stronger than gravitational force<br>Strong nuclear force is responsible to hold the protons and neutrons together. Strong nuclear force is about 1031\xa0times stronger than gravity. They act at short distances and are very strong. | |
| 1024. |
what is dopler effect? |
| Answer» When the source of sound and the listener have a high relative velocity between them the pitch or frequency of the sound heard by the listener goes on changing. When the distance between the two decreases the pitch increases and vice versa. This motion related frequency change is called Doppler Effect. | |
| 1025. |
Give important TOPICS for final exams of 2019 march |
| Answer» | |
| 1026. |
Derive Formula of kinetic energy |
| Answer» Newton 3 law v(squ)=u(squ)+2as...1W=(ma)s....2Using 3 lawValu of s=v(squ)/2a...3Putting in eq....2W=masW=ma.v(sqa)/2a (solving)We getK=m(vsqu)/2 or work done<br>1/2 mv v | |
| 1027. |
Define free fall . also mention it\'s graph |
| Answer» downward movement under the force of gravity only. | |
| 1028. |
Find pressure on swimmer 10m below the surface of water |
| Answer» 100000<br>H=10Rho=1000G=9.8<br>Height×rho×g | |
| 1029. |
What is the moment of inertia of a disc about one of its diameters |
| Answer» Ml^2/4 | |
| 1030. |
What is Torque? Give its unit. Show that it is |
| Answer» Torque is the tendency of a force to cause or change the rotational motion of a body. It is a twist or turning force on an object.\xa0Torque is calculated by multiplying force and distance.The SI units of torque are newton-meters or N*m. Even though this is the same as Joules, torque isn\'t work or energy so should just be newton-meters.<br>The turning effect of force is torque and its unit is newton metre | |
| 1031. |
What is node and anti node in physics |
| Answer» One characteristic of every standing wave pattern is that there are points along the medium that appear to be standing still. These points, sometimes described as points of no displacement, are referred to as nodes. There are other points along the medium that undergo vibrations between a large positive and large negative displacement. These are the points that undergo the maximum displacement during each vibrational cycle of the standing wave. In a sense, these points are the opposite of nodes, and so they are called antinodes.<br>I mean in waves | |
| 1032. |
Obtain the following a particle performing projectile motion. (a) maximum height (b) time of flight |
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| 1033. |
A simple pendulum is mounted inside a spacecraft. What should be its time period of oscillation? |
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| 1034. |
Define centripetal and centrifugal force |
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| 1035. |
PLEASE GIVE ME a TIPS AND TOPICS FOR EXAMINATION 2019 MARCH |
| Answer» Important topics are---------1. Thermodynamics 2. Simple harmonic motion3.kinetic theory of gases 4 . Kinematics | |
| 1036. |
Why there is plans got heat by the temperature of atm |
| Answer» | |
| 1037. |
Name the two physical quantities that have same dimensions. |
| Answer» Displacement and velocity<br>And Heat and torque also....<br>Work and energy | |
| 1038. |
Sir I ask about derivation |
| Answer» | |
| 1039. |
Relationship between escape velocity and orbital velocity |
| Answer» Escape velocity is the minimum speed needed for an object to "break free" from the gravitational attraction of a massive body. The escape velocity from Earth is about 40,270 km/h (25,020 mph).The velocity of this orbit depends on the distance from the object to the center of the Earth. The velocity has to be just right, so that the distance to the center of the Earth is always the same.The orbital velocity formula contains a constant, G, which is called the "universal gravitational constant“. | |
| 1040. |
State newtons law of colling deduce its relation |
| Answer» Newton\'s law of cooling states that the rate of fall of temperature of a hot body is directly proportional to the temperature difference between the body and surrounding when temperature difference is small.DT/dt ∝ (T - T0) | |
| 1041. |
What is the work energy theorem |
| Answer» Work energy theorm is change in kinetic energy .<br>It states that work and energy are equivalent with each other<br>It states that the work done by displacing a body is equals to change in kinetic energy of the body! i.e. w=kf -ki | |
| 1042. |
Write dimensions and it si unit |
| Answer» Dimensional formula of a physical quantity is the formula which tells us how and which of the fundamental units have been used for the measurement of that quantity. Dimensions of a physical quantity are independent of the system of units. | |
| 1043. |
Give an example of motion for which distance is equal to the magnitude of displacement? |
| Answer» When body moves in a straight line without reversing its direction. | |
| 1044. |
What is meant by shearing strain |
| Answer» Ratio of deformation to original strain | |
| 1045. |
Important topics in physics |
| Answer» Projectile motion, bending of a cyclist,Bernoulli\'s theorm, capillary tube, total internal reflection, work energy theorm, pressure exerted by a gas molecules | |
| 1046. |
The linear momentum of a body increased by 10% what is the percentage change in its kinetic energy |
| Answer» | |
| 1047. |
What is the difference between A° and A.U. ❓ |
| Answer» Astronomical unit (AU, or au), a unit of length effectively equal to the average, or mean, distance between Earth and the Sun, defined as 149,597,870.7 km (92,955,807.3 miles)........??<br>A° stands for angstrom having value 10 raised to -10 metre..... | |
| 1048. |
4 .... Parts of carnot engine nd explain also |
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| 1049. |
Define parallex method of chapter2 |
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| 1050. |
1/infinity |
| Answer» Ans will be 0<br>0<br>You cannot say it is 0 it is a indeterminate having no value at all<br>0<br>Tends to be 0<br>0<br>0 | |