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Reducing friction by an air stream
Cut out a disc of cardboard about 10 cm in diameter. With a red-hot pin, burn a hole by the centre. Saw a small cotton reel in half and glue the unique end of one half over the middle of the disc. Search a piece of bamboo or some other tube which just fits the hole in the reel. Push this into the neck of a small balloon, using cotton or a rubber band to protected the joint.
Friction by an air stream
Explain the Optical Instruments? The lenses you use most often are the ones in your eyes. The front of your eye has a convex lens whose focal length can be changed by the muscl
Show the types of chromatic aberration. What do you understand by Fraunhoffer lines? Explain their origin.
Can you explain lens maker's formula. Derive the mathematical expression for the effective focal length of two thin lenses in contact.
Q. What is the proper formula utilized to calculate acceleration? Answer:- There are some the most famous is a = F/m where F is the net force applied to a mass m. Accelera
Put a nail in the lower end of a candle. The nail should be just the right weight to make the candle float with its top a little above the surface of the water. Float the candle an
Advantages and disadvantages of three phase system over single phase System A) In a single phase circuit the power delivered is pulsating. In three phase system the total power
State and explain laws of transverse vibrations in stretched strings. Describe how do you verify them using sonometer.
Type 1 and type 2 superconductors: For one group of SUPERCONDUCTOR in which below H c is in the Meissner state, where it excludes all the magnetic flux from the interior of the
A silicon material is subjected to a magnetic field of strength 1000A/m. If the magnetic susceptibility of silicon is -0.3x10-5, calculate its magnetization and magnetic flux densi
The part of mechanics which works with the explanation of the motion of an object without taking reason of the origin is known kinematics. While, the study of the motion of an obje
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