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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.
| 8051. |
Mechanism of refrigerator |
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| 8052. |
What is elastic collision? |
| Answer» The collision in momentum and kinetic energy both remains constant | |
| 8053. |
Adding solvent surface tension become? |
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| 8054. |
11 class datesheet |
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Answer» Ixams b hogye 11 k datesheet kya karni O mental? soon ja. |
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| 8055. |
Derivative formulae for chapter 3 |
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| 8056. |
Relation between angular velocity and linear |
| Answer» V= rw | |
| 8057. |
CAN WE MOVE EXTREMELY HEAVY WEIGHT IN SPACE? |
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Answer» Ya Yes |
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| 8058. |
Why integration of 1/V.dV ins not integration of V^-1.dV but it is [loge V] from V1 to V2? |
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| 8059. |
State projrctile in horizontal projection |
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| 8060. |
What is Laplace correction |
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Answer» Sorry 332m/sec A/C to Laplace correction the speed of sound is an Adiabatic process thus speed of sound is 3.32m/sec |
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| 8061. |
What is the relations between gravitational intensity at a point |
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| 8062. |
To prove Cp >Cv |
| Answer» Cp = Cv + R but Cv = Cp - R so Cp> Cv. | |
| 8063. |
Carnot heat engine |
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| 8064. |
how to solve a log easily |
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| 8065. |
Explain zeroth law of thermodynamics? |
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Answer» Every two body are thermal equlibrium and third body are separately equlibrium is called zeroth law of thermodynamics Total energy of the universe is a constant. ORConservation law of energy. |
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| 8066. |
How to apply energy conservation? |
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| 8067. |
Derive an expression on work done in ischoric process |
| Answer» Isochoric process is a process in which volume is kept constant. | |
| 8068. |
Derive ascent formula |
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| 8069. |
Dimension of diffusion constant |
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| 8070. |
Why cp is greater than cv |
| Answer» In cp presure is trnsfer partially in cv not partially | |
| 8071. |
How to establish the relationship between escape velocity and orbital velocity |
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Answer» Refer to physics reference S.l arora or dinesh. Divide both formula.....u will get root 2 as the result |
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| 8072. |
The motion of a particle of mass m is described by y=u+1\\2gt.find force |
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| 8073. |
Oscillator |
| Answer» A body executing ocillatory motion is called an oscillator | |
| 8074. |
Bernoulli\'s theorm |
| Answer» You can refer sl Arora or NCERT | |
| 8075. |
State and prove bernaullis theorem? |
| Answer» This theorem states that for stream line flow of an ideal liquid, the sum of energy (Pressure energy, potential energy and kinetic energy) per unit mass remain constant at every cross section through out the liquid flow. Consider an ideal liquid flow through a pipe of non uniform cross section. Let a1 and a2 = area of cross section at the end A and B respectively, v1 and v2 =velocity of liquid at the end of A and B respectively, p1 and p2= pressure at the end A and B respectively, h1 and h2 = height of end A and B from a reference level. Work done per second at the end A on the liquid = p1a1v1Work done per second at the end B on the liquid = p2a2v2From equation of continuity, we know a1v1¶ = a2v2¶ (¶ be the density of the liquid) Or, a1v1=a2v2=V (volume of the liquid flowing per second through the pipe) Net work done per second on liquid by pressure = p1a1v1 - p2a2v2 =p1V-p2V______1 Increase in kinetic energy of liquid per second from A to B =1/2mv2 square - 1/2mv1 square_____2Increase in potential energy per second from A to B = mgh2-mgh1______3Work done on liquid by pressure is the sum of increase in kinetic energy and potential energy. p1V-p2V= 1/2 mv2 square - 1/2 mv1 square + mgh2-mgh1p1V+1/2 mv1 square + mgh1 = p2V + 1/2 mv2 square + mgh2p1/¶ + 1/2 v1 square + gh1 = p2/¶ + 1/2 v2 square + gh2p/¶ + 1/2 V square +gh = constant Multiplying above equation by "¶", P+1/2 ¶ V square + ¶gh = constant. | |
| 8076. |
What us universal law of gravitation |
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| 8077. |
simple defination of polygon law of vector addition |
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| 8078. |
Give an example of a motion where x>0,v0 at a particular instant? |
| Answer» Motion of a simple pendulum at extreme point x=maximum v=0 a=maximum | |
| 8079. |
Describe the operation of carnot engine. Calculate the efficiency of carnot engine. |
| Answer» Carnot engine is the ideal engine of all engine it is impossible to make Carnot engine in real because it is hypothetical engine Carnot assume the source give infinite energy and you can see the efficiency in book like sl Arora NCERT pradeep etc. | |
| 8080. |
Motion in one dimension |
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| 8081. |
Stocks\'s formula |
| Answer» 6πnrv(6π=costant) | |
| 8082. |
Omega= √k/m |
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| 8083. |
Define pascal law ? |
| Answer» Increase in pressure at one point of enclose liquid in equilibrium of rest is transmitted equally to all other points of the liquid and also through the walls or container provided the effect of gravity is neglected | |
| 8084. |
doppler\'s effect |
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| 8085. |
Rest and motion are relative terms . Explain. |
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Answer» Mansi your answer is as sweet as you Rest and motion are relative terms for example if we are moving in a train we are in motion w.r.t outside things of the train but we are in rest w.r.t passengers in train |
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| 8086. |
derive carnot engine |
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| 8087. |
Mayor formula |
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Answer» cp-cv=r Mayer or mayor |
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| 8088. |
What is banking of roads |
| Answer» The process of raising outer edge of a road over its inner edge through certain angle is known as banking of road. | |
| 8089. |
In Final how many marks of numericals comes |
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Answer» about 20 12 marks |
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| 8090. |
All derivations of chapter 14 oscillations |
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| 8091. |
How much time give to this subject .....And how to learn it........How to gain good marks in it.. |
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Answer» Time doesn\'t matter study with concentration mayters Numerical questions are important so give most of time to numerical |
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| 8092. |
Derive an expression showing variation of acceleration due to gravity |
| Answer» Dear bahut lamba hai | |
| 8093. |
20log50 |
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| 8094. |
When a liquid drop breaks into 27 small drop and surface tension is given By S. Then find the energy |
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| 8095. |
Difference b/w oscillation&periodic motion |
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| 8096. |
What is zeroeth law of thermodynamics |
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Answer» If in a system containing A, B, C.and A is separately in thermal eqm with C, B is separately in thermal eqm with C, then A and B are in thermal eqm with each other. When the two bodies are thermal equilibrium with the third body separately they thermal equilibrium with each other. |
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| 8097. |
Is clearing ncert only enough for neet exam |
| Answer» Yep for NEET NCERT is best but for JEE you should refer another book. Provided you dont neglect NCERT. | |
| 8098. |
How the value of acceleration due to gravity changes with depth? |
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Answer» The value of \'g\' is [(R-D) / R] where R is the radius of earth and D is the depth It decreases with depth |
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| 8099. |
What is the ratio of escape speed of earth and the escape speed of the moon |
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| 8100. |
Friction is necessary evil |
| Answer» Friction is known as a nesssary evil becauseit helps as--we would not be able to walk without friction--without friction we would slip--the brakes of the vehicles also work by frictionit causes problems as--it wears out thematerials wheter they are screws, ball bearings ors soles of shoes--because of wearing out of these materials we have to buy things again and again | |