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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.
| 6101. |
How will the kinetic energy of the body change if there momentum is doubled |
| Answer» kinetic energy become 4times | |
| 6102. |
What is variable force |
| Answer» If the amount on force acting on the body changes with time it is called variable force | |
| 6103. |
Find M.I of a rod about an axis passing through its one end and perpendicular to the length |
| Answer» ML^2/3 | |
| 6104. |
What is poisson\'s ratio ? |
| Answer» It is defined as the ratio of lateral strain to the longitudinal strain within the elastic unit | |
| 6105. |
a wire of ring of 3cm radius is rested on the syrfaceof a |
| Answer» | |
| 6106. |
A liquid is being converted into steam at its boiling point what will be the specific heat |
| Answer» | |
| 6107. |
How Reynolds number is important in manufacturing cars,ships etc? |
| Answer» | |
| 6108. |
What is Young\'s modulus |
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Answer» youngs modulus is the ratio of normal stress to lateral strain. It is the rotio of stress to strain developed in a body |
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| 6109. |
Why mercury used in barometers |
| Answer» Because of low density | |
| 6110. |
What is Bernoulli\'s theorem |
| Answer» Total energy for an incompressible, non viscous fluid flowing with friction zero in a streamline path remains constant | |
| 6111. |
What is thermometry? |
| Answer» | |
| 6112. |
Define critical velocity |
| Answer» | |
| 6113. |
What is the marking scheme of class 11 in whole year including term test and exams |
| Answer» | |
| 6114. |
Newton 4th law |
| Answer» S(nth)--- u+a/2(2n-1) | |
| 6115. |
What is the relation between g and G |
| Answer» We know that F=GmM/R^2Put F=mgmg=GmM/R^2g=GM/R^2 | |
| 6116. |
Derivation of Newton law of colling by Stephen boltzmen law |
| Answer» Newtons law of colling states that the rate of colling of a body is directly proportional to the temperature difference between the body and its surrounding provided the temperature difference is small. -dq/dt is directly proportional to (T-T0).Rate of loss of heat ,-dq/dt=k (T-T0) | |
| 6117. |
What is work energy theorem |
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Answer» The work done by force act on body is equal to change in its kinetic energyW=1/2mv^2-1/2mu^2 Work done by all the forces in equal to the change in kinetic energy. |
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| 6118. |
If velocity is constant then speed must be constant true or false |
| Answer» True | |
| 6119. |
Show that vectors ā =2î+4j+5k And b=3î-4j-2k are perpendicular. |
| Answer» if the dot product of a and b vector is zero then a and b vectors are perpendicular | |
| 6120. |
Discuss practical method for finding size of molecule of oelic acid |
| Answer» | |
| 6121. |
All the derivations and the explanation of keplers law |
| Answer» | |
| 6122. |
formula of spring force what |
| Answer» K\\, =\\, -\\frac{F}{X}Where,F = Force applied,x = displacement by the springIt is expressed in Newton per meter (N/m). | |
| 6123. |
When weight of body =weight of displaced water,where the body float? |
| Answer» On the surface of water. | |
| 6124. |
derivation of oscillation of liquid in U tube? |
| Answer» | |
| 6125. |
Mention an expression for co efficient linear expansion of solids and explain the summer symbols |
| Answer» | |
| 6126. |
State and prove Bernoullis Thworem |
| Answer» | |
| 6127. |
PhysicsWhat is gravity |
| Answer» Gravity, or gravitation, is a natural phenomenon by which all things with mass are brought toward one another, including objects ranging from atoms and photons, to planets and stars. | |
| 6128. |
the linear speed of a planet around the sun is not constant in its orbit. comment |
| Answer» according to keplers third law areal velocity is constant . hence to cover equal area of elliptical orbit in same time linear speed cannot be constant. | |
| 6129. |
Bernoulli\'s |
| Answer» | |
| 6130. |
Roofs of huts are blown up in a storm. Why |
| Answer» Because when storm comes pressure below the roof is higher as compared to top of roof which push the roof upward. | |
| 6131. |
Antiseptic should have low surface tension. Why |
| Answer» Due to lower surface tension the antiseptic can spread easily on body surface. | |
| 6132. |
Geostationary satellite |
| Answer» geostationary satellite is an earth-orbiting satellite, placed at an altitude of approximately 35,800 km directly over the equator, that revolves in the same direction the earth rotates (west to east). | |
| 6133. |
Why we have to take is directly proportional to mlg in dimensional analysis |
| Answer» | |
| 6134. |
What is modulus of elasticity |
| Answer» The modulus of elasticity of steel is many times higher than that of rubber. By definition, a stiffer material has a higher modulus of elasticity. The modulus of elasticity of a material is a measure of its stiffness. It is equal to the stress applied to it divided by the resulting elastic strain. | |
| 6135. |
centre of cyclone is dangerously powerful. why |
| Answer» Centre of cyclone or eye has mostly calm weather. It is rough circular area with diameter of 30 to 40 km. It has lower pressure as compared to outer parts of cyclone. The pressure is 15% less then outer areas. Has pressure is less the speed of wind is more fast then at outer parts. It is also surrounded by thunderstroms too, which is also dangerous. | |
| 6136. |
Type of elasticity in liquid and gas |
| Answer» | |
| 6137. |
Why All circular motion r called periodic? |
| Answer» Circular motion is where the object travels in a path which is circular -can be a full circle, can be a part of the circle. Periodic motion is where the object repeats its motion after a particular time. Therefore when an object is uniformly moving in a circle and it completes360 degrees, it repeats itself. | |
| 6138. |
Vduu |
| Answer» | |
| 6139. |
Why shear modulus is less than Young\'s modulus? |
| Answer» | |
| 6140. |
What is buoyancy force |
| Answer» When we dip a container in a liquid, our hands feel a force in the vertical direction, that force is perpendicular to the force applied by our hands on the liquid and is called buoyant force. | |
| 6141. |
Filament of bulb is made by which Metal |
| Answer» Mostly Tungsten, as it has high melting point | |
| 6142. |
Formula and its derivation of automobile hydraulic lift |
| Answer» F/A=f/a on both sides of lift | |
| 6143. |
Which is more elastic rubber or steel |
|
Answer» Rubber Rubber |
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| 6144. |
what domy you meantmy by strain |
| Answer» | |
| 6145. |
What are orthogonal vectors |
| Answer» Orthogonal Vectors:Two vectors u and v whose dot product is u·v=0 (i.e., the vectors are perpendicular) are said to be orthogonal. In three-space, three vectors can be mutually perpendicular. | |
| 6146. |
Isothermal elasticity |
| Answer» | |
| 6147. |
What is adiabatic elasticity |
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| 6148. |
What is annular disk? |
| Answer» | |
| 6149. |
Which is more elastic rubber or steel?explain |
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Answer» Steel Steel Steel because it has high young\'s modulus of elasticity Steel because it\'s elasticity is high Steel |
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| 6150. |
What is time machine |
| Answer» | |