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Making a simple reflecting telescope
A simple reflecting telescope can be made from a concave mirror obtained from a shaving mirror. The mirror is arranged wooden box of suitable size in such a way that it can be tilted at dissimilar angles. An upright made of wood is attached to the box so that its angle may also be varied. Two short focus lenses are fixed in corks which are then placed in a short length of mailing tube as an eye-piece. Then join this eye- piece attached to the wood upright exactly at the focal
State of Communication in the Past: Those of us who have experience of life in remote villages, far away from urban centres, are familiar with such features as poor roads whi
Procedure 1 . After the dissection experiment is over the dead animals are put in disposable paper bags and the bag is sealed. Animal tissues and excreta should also be put and
Comment on their location in the sky (constellation, relative altitude over the horizon, etc) and track their movement above the course of the next couple of weeks, every day comme
A self-starting siphon Secure a piece of glass or plastic tube about 2.5 cm in diameter and 8 to 10 cm in length. Fit single end with a one-hole stopper, carrying a short lengt
how does lungs function
Carbon dioxide, dry powder and vapourising liquid extinguishers : Fires produced by spilled liquids should be extinguished by directing the jet or discharge horn towards the near
Explain the Water balance function of the kidney Water is one of the most important constituent in the daily diet. You are already aware of the roles it plays in our body. Main
Atomic energy: In view of the fast depletion of our non-renewable resources like coal and petroleum, and because of pollution which power stations burning coal cause, there h
1) Consider the diagram below, where a pump is used to draw water from a lake to feed an irrigation system. a) Which of the points of departure the minimum water flow takes
Question 1. Discuss the biological factors influencing radioactivity. 2. Explain the quality assurance of computed Tomography. 3. Write short notes on the following
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