Popular Physics Olympiad Questions

some good questions given in the sample paper of kvpy ...

1. A solid cylinder of mass " M " and radius " R " and height " R " has a helical groove cut on it's surface with a helix angle of tan^{-1}\frac{1}{2\pi} . It can freely rotate about a vertical axis passing through the center ...

How was NSEP for u guys (those who gave) ? ...

I guess this is pretty tough for many guys out there -- but yesterday I learned such a great sum that I cannot resist to give it ---------------------- Suppose you don't know any of the equations that are used in S . H . M . ...

Prove that a point charge CANNOT be in the state of stable equilibrium in an electrostatic field!! ...

Consider a drop of conducting liquid in gravity free space. Its radius is R while the surface tension of the liquid is T. Now the drop is supplied some charge Q. For what values of Q is the drop stable. ...

You are provided a semi-infinite rod . Determine the dependance of its mass density with distance so that it satisfies the following property - If the rod is cut at an arbitrary position , the remaining semi-infinite piece wi ...

*Image* A fountain consists of a small hemispherical rose (sprayer) which lies on the surface of the water in a basin, as illustrated in the figure. The rose has evenly distributed small holes in it, through which water spurt ...

I saw that last date for enrollment is 15th September.. But How do I enroll my self in case my school is not registered with them? It say "You must register from your OWN School / College." Does it mean that they have sent an ...

I want to know how to start preparation for NSEP? Please tell me books and which specific topics to prepare? ...

1. 3 identical balls moving together along a horizontal line with velocity v collide with 2 similar balls at rest along the same line. The collision is elastic. After the collision a. 2 balls move with vel. v b. 2 balls move ...

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The cube shown below has 5 faces grounded. The sixth side, insulated from the others, is held at a potential V0. What is the potential at the center of the cube and why? *Image* ...

What is the largest sizer of earth for which it could have been a blackhole? ...

A comet is moving in a parabolic path around the Sun in the same plane as the orbit of Earth (without any collision with the Earth, obviously!). Determine the maximum time that this comet can spend within the Earth's orbit, w ...

A cylinder of mass M and radius R moves with speed v through a region of space that contains particles of mass m, that are at rest. In unit vol., 'n' of these particles are present. Cylinder moves in a direction perp to its a ...

Q: A water clock in ancient Greek is designed as a closed vessel with a small orifice " O ". The time is determined according to the level of water in the vessel. What should be the shape of the vessel for the time scale to b ...

Hi please see http://www.ipho2012.ee/physicscup/ :O :O Are they giving any prize(s) ? At least I could not make out anything.. and I'm late to participate.. ( I thought I would just cheat :D) ...

The mass of a square plate of side length ' 2l ' is ' M '. A semi circular portion is cut off and placed as shown. Find the COM of the resulting distribution. *Image* Fast plz! ...

Please Prove this result: The net electric charge of a conductor resides entirely on its surface. ...

I don't whether it's solvable or not. It came as a thought to me while I was filling water in bottles. So Here I " Go " : A cylindrical tank of radius " r " contains water upto height " H " . There is a hose at height " h " f ...

In the following R-C circuit, the capacitor is in steady state. The initial separation b/w the capactor plates is xo. If at t=0, the separation between the plates starts changing so that a constant current starts flowing thro ...

The energy released by the fission of uranium nuclei would be higher if the uranium nucleus split into three parts rather than into two parts. Despite this, the fission of uranium only produces two nuclei. Why is this? ...

Is it possible to have a spherical drop of water that could evaporate without absorbing heat or losing internal thermal energy? Given data: Surface tension of water: 0.073 N/m Density of water: 1000 kg/m3 Latent heat of evapo ...

If someone found a motionless string reaching vertically up into the sky and hanging down nearly to the ground - then should that person consider it as evidence for UFO's ? [56] Or could there be an explanation in agreement w ...

Now that's very interesting -- a section for physics Olympiad. It opens another world to us. At least, there would be a bit less restriction as to the nature of problems that ppl can discuss over here. Good work Nishant sir. ...

Determine or estimate the net heat flux density P between two parallel plates at distance L from each other, which are at temperatures T1 and T2, respectively. The space between the plates is filled with a monoatomic gas of m ...

A given amount of (approximately ideal) gas is held in a spherical container. For what gas pressure the weight of the container will be minimal? ...

Hi all, get relevant and useful flash animations in physics at http://www.mksfoundation.com/flashlets.aspx and lot of other free stuff for JEE preparation at this site. ...

Anyone have any idea, about where usually the INPhO is held in Kolkata? Which school or Institution? Where was it held in 2010?? ...